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Records Committee review for rare bird sighting of Curlew Sandpiper at Hawkeye Wildlife Area, 1988
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-05-13
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Curlew Sandpiper at Hawkeye Wildlife Area in Johnson County, IA on May 13, 1988. Includes a record review document with votes, an article in Iowa Bird Life, and five documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Curlew Sandpiper
|
Hawkeye Wildlife Management Area
|
near DuPont Bridge, Hawkeye Wildlife Area, Johnson Co, IA
|
old backwater in reservoir flood plain, muddy edge
|
The documentation form by Thomas H. Kent forms the basis of this record. Other documentation forms by Francis L. Moore, Peter C. Petersen, Jim Fuller, and Carl Bendorf were submitted. Other observers include Ross Silcock, Walter Zuurdeeg, and Dick Tetrault. | Elimination of similar species: No other species has similar features. | The original documentation form event lasted from 12:50:00/13:30:00.
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Iowa Ornithologists' Union | MS 166
|
10
|
7
|
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Records Committee review for rare bird sighting of Eurasian Wigeon at De Soto National Wildlife Refuge, 1995
|
Administrative records Field notes Forms (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-10-27
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review of a Eurasian Wigeon at De Soto National Wildlife Refuge in Harrison County, IA on October 27, 1995. Includes one record review document with votes and a documentation forms.
|
Hulsebus, Terry J.
|
Eurasian Wigeon
|
DeSoto Lake
|
De Soto Nat'l. Wildlife Refuge
|
Oxbow Lake - nearshore
|
The documentation form by Terry J. Hulsebus is the earliest and the one that forms the basis of this record. Another observer was Mindy Sheets. | Elimination of similar species: American wigeon - located in close proximity. Close comparison was very helpful. | The original documentation form event occurred around 15:30:00.
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Iowa Ornithologists' Union | MS 166
|
8
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14
|
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Records Committee review for rare bird sighting of Eurasian Wigeon at Riverton Area, 1991
|
Administrative records Field notes Forms (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-03-06
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review of a Eurasian Wigeon at Riverton Area in Fremont County, IA on March 6, 1991. Includes a record review document with votes, an Iowa Bird Life article, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Eurasian Wigeon
|
Riverton Wildlife Management Area
|
Riverton W.A., Fremont Co., IA
|
|
The documentation form by Stephen J. Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Eugene Armstrong was submitted later. Other observers include Eloise Armstrong, and Ross Silcock | Elimination of similar species: The combination of reddish head with buffy crown, gray mantle and flanks, black rump and undertail, and stubby, bluish-gray bill eliminates other waterfowl. | The original documentation form event lasted from 10:35:00/11:05:00, 12:05:00/12:25:00, and 16:40:00/17:22:00.
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Iowa Ornithologists' Union | MS 166
|
8
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14
|
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Records Committee review for rare bird sighting of Eurasian Wigeon at Spirit Lake, 1985
|
Administrative records Correspondence Field notes Forms (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-04-01
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review of five Eurasian Wigeons at Spirit Lake in Dickinson County, IA on April 1, 1985. Includes a record review document with votes, a summary, correspondence about the bird sighting, and a documentation form submitted to the committee.
|
Foote, LaVonne
|
Eurasian Wigeon
|
Spirit Lake
|
In a marsh about 7 miles west of Spirit Lake, Iowa on Highway No. 9 on the South side of the road.
|
marsh
|
The documentation form by LaVonne Foote is the earliest and the one that forms the basis of this record. Other observers include Mavis Wunder and Jan Ortmeier. | Elimination of similar species: American wigeon - Easy to tell apart as male colors are so different. | The original documentation form event lasted from 13:00:00/13:30:00 and 15:30:00/16:05:00 on April 1, 1985 as well as 11:21:00/12:15:00 on April 2, 1985.
|
Iowa Ornithologists' Union | MS 166
|
8
|
14
|
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Records Committee review for rare bird sighting of Eurasian Wigeon at Sweet Marsh, 1984
|
Administrative records Clippings (information artifacts) Field notes Forms (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-04-15
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Eurasian Wigeon at Sweet Marsh in Bremer County, IA on April 15, 1984. Includes a record review document with votes, an article in Iowa Bird Life, a summary of review, and eight documentation forms submitted to the committee.
|
Main, Stephen
|
Eurasian Wigeon
|
Sweet Marsh
|
Sweets Marsh, NW section, Tripoli, IA
|
Marsh - see above
|
The documentation form by Stephen Main is the earliest and the one that forms the basis of this record. Other documentation forms by Elaine Main, Francis L. Moore, Robert K. Myers, Thomas H. Kent, Thomas J. Staudt, Peter C. Petersen, and Carl J. Bendorf were submitted later. Other observers include Roberta Oppedahl and Lucille Liljedahl. | Elimination of similar species: have previously seen American Wigeon, Shoveler (present this time) and Redhead. | The original documentation form event lasted from 11:00:00/12:00:00.
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Iowa Ornithologists' Union | MS 166
|
8
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14
|
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Records Committee review for rare bird sighting of Eurasian Wigeon at Ventura, 1992
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-03-18
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review of a Eurasian Wigeon 4 miles south of Ventura in Cerro Gordo County, IA on March 18, 1992. Includes a record review document with votes, an Iowa Bird Life, and a documentation form submitted to the committee.
|
Pinkston, Randall, 1956-
|
Eurasian Wigeon
|
Ventura
|
County Roads B43 at S14, approx. 4 miles south of Ventura, Cerro Gordo Co., Iowa
|
|
The documentation form by Randall Pinkston is the earliest and the one that forms the basis of this record. | Elimination of similar species: Obvious differences from American Wigeon include the American's dark (green) face mask, white forehead and crown ("baldpate"), as well as those other differences discussed above. Female American has finely mottled grayish head and brownish sides, lacks striking patterns on wings and hindparts. Redhead (Aythya americana) has 'pochard' gestalt with darker brick-red vs. cinnamon-buff head, head more rounded in profile, tricolored bill broad and stout. Also has relatively plain wing with gray coverts and pale gray remiges. Canvasback (Aythya valisineria) of either sex safely separable on the basis of head and bill in profile. Again, male's head is dark brick-red, back and sides whitish, lacks bold wing pattern. Female mergansers easily separable on the basis of bill alone. | The original documentation form event occurred around 11:00:00.
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Iowa Ornithologists' Union | MS 166
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8
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14
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Records Committee review for rare bird sighting of Eurasian Wigeon northwest of Palo, 1992
|
Administrative records Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-04-25
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review of a Eurasian Wigeon northwest of Palo in Linn County, IA on April 25, 1992. Includes a record review document with votes, a photograph, and four documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Eurasian Wigeon
|
Palo
|
2 miles north and 1 mile west of Palo, Linn Co., Iowa
|
Shallow natural pond in low-lying farmland.
|
The documentation form by Thomas H. Kent forms the basis of this record. Other documentation forms by Bob Cecil, Jim Fuller, and James Durbin were submitted later. Other observers include Joyce Durbin, James Scheib, Pam Allen, Reid Allen, Chris Edwards, Keith Carris, Peter Wickham and many unidentified other observers. | Elimination of similar species: Very similar to American Wigeon except for coloration as mentioned. | The original documentation form event occurred from 06:15:00/06:30:00 and around 16:00:00.
|
Iowa Ornithologists' Union | MS 166
|
8
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14
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Records Committee review for rare bird sighting of Ferruginous Hawk at Ames, 1992
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-04-05
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review for a Ferruginous Hawk at Ames in Story County, IA on April 5, 1992. Includes a record review document with votes and a documentation form submitted to the committee.
|
Arbour, David
|
Ferruginous Hawk
|
Ames
|
At the intersection of I-35 and E29 () just N.E. of Ames:
|
Flat Farmland/Roadside
|
The documentation form by David Arbour is the only one submitted and forms the basis of this record. Other observers include Matt Humann, Harold Harbert, and Yumann Lee. | Elimination of similar species: Red-tailed Hawk lacks the white crescent near the base of primaries and is smaller and shorter winged. Rough-legged Hawk has a dark belly band and a subterminal band on tail. | The original documentation form event lasted for approximately 10 minutes during mid-morning.
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Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Benton Township in Fremont County, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-01-17
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Benton Township in Fremont County, IA on January 17, 1989. Includes a record review document with votes, field notes of the sighting, and a documentation form submitted to the committee.
|
Silcock, W. Ross
|
Ferruginous Hawk
|
Benton Township
|
Benton TWP, Fremont Co., IA.
|
Open Missouri riverbottom; soybean stubble fields
|
The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. | Elimination of similar species: See attached discussion. (After writing my field notes at the site of observation and returning home later I found the stnadard field guides most unhelpful. Dunne et al's discussion of Ferruginous was tremendous, indicating variation in Ferruginous Hawks, and especially in discussion of flight characteristics, 'jizz', and behavior [...] The only possibility which is realistic to consider is Redtailed [sic] Hawk, or possibly Rough-legged Hawk. While similar in 'jizz' to a rough-leg (long tail, flight with 'crooked' (=osprey-like) wings, darker mottling underneath, longish wings), Roughleg can be eliminated by the following characters - absence of characteristic underwing pattern, including significant wrist mark (Ferruginous should show this to some extent according to Dunne et al, but I did not see it; remember I did not see the underparts well), and method of hunting-I have never seen a roughleg fly this low over the ground for this long (about a mile) - much lower and more consistently so than a harrier. Regarding elimination of Red-tail - I really think it is easier to eliminate Red-tail than rough-leg based on 'jizz'. The tail was too long, was never spread, and wings were long than Red-tail's. Tail pattern and 'three points of light' combination also is never seen on a Redtail [sic], especially when viewed from above. (The similarity to Roughleg [sic] in pattern can be seen in the front end paper in Dunne et al). Habitat and behavior also are important - while Redtails [sic] are very common in Fremont County, they are definitely not common on the open Missouri bottomlands. Redtail [sic] is a bird of edge habitat. I always look closely at any buteo seen from October to April on the open bottomlands. I have never seen any other buteo fly as low to the ground for as long as this bird - when i say low, I mean 1-2 ft above the ground. At no time was the bird higher than 6', and that was when perched on possibly the lowest post for some distance. Even a Harrier will rise and fall while hunting. This bird stayed low, in the manner of a hunting Golden Eagle (which I have seen in Western Kansas) - a point also mentioned by Dunne et al. Another point noted by Dunne et al and also shown in my sketch (purposely!) and, mentioned in my field notes was the osprey-like crook in the wings-while flying low over the ground. Dunne et al note that this is characteristic of a hunting Ferruginous. | The original documentation form event lasted from 15:30:00/15:45:00.
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Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at both Oxford and Homestead, 1979
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1979-02-03
|
1994-02-03
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at both Oxford in Johnson County, IA and Homestead in Iowa County, IA on February 3 and 4, 1979. Includes a record review document with votes, two articles in Iowa Bird Life, and two documentation forms submitted to the committee.
|
Hollis, Richard Jule
|
Ferruginous Hawk
|
Township of Oxford
|
N Eastern Oxford Township, Johnson Co., Iowa
|
perched on hedge rows or wood edges over snow covered fields
|
The documentation form by Richard Jule Hollis is the earliest and the one that forms the basis of this record. Other documentation forms by Carl Bendorf were submitted later. Other observers include Janet Hollis and Cal Knight. | Elimination of similar species: red upper surface of Iower tail and lack of belly band eliminates Buteo lagopus white under side of tail (w/o terminal band) + white upper tail tend to eliminate B. jamaicensis. | The original documentation form event occurred at 16:00:00 for the sighting on February 4, 1979 and had no time for February 3, 1979.
|
Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Hichcock Nature Area, 1999
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1999-12-05
|
2000-11-28
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Hitchcock Nature Area in Pottawattamie County, IA on December 5, 1999. Includes a record review document with votes and a documentation form submitted to the committee.
|
Orsag, Mark
|
Ferruginous Hawk
|
Hitchcock Nature Area
|
Hitchcock Nature Area (Lodge Hawkwatch Point)
|
Loess Hills / Missouri River Valley. The bird was coming from out of the valley. It crossed the wooded ridges of HNA and headed southeast.
|
The documentation form by Mark Orsag is the earliest and the one that forms the basis of this record. | Elimination of similar species: I considered 5 other species of raptor in total. I eliminated two possibilities (Rough-legged Hawk and Northern Harrier) within seconds of seeing the bird in question. I eliminated two others (Bald Eagle [imm.], and Red-tailed Hawk more or less during the minute or so that I had the bird in view. **** ** I reviewed, in my head, the fine points of the Krider's Red-tailed Hawk for a few seconds after the bird had disappeared from view. The fifth species came to mind just before I started writing this report (the next day). I retroactively eliminated it. In reconstructing my reasoning, I believe: Rough-leg was eliminated due to the unmarked white throat, breast, underwings, and underside. Northern Harrier was eliminated due [sic] the large size and robust shape of the bird, the flight pattern (especially wingbeat), the unstreaked white throat, etc. Immature Swainson's Hawk later eliminated by dark head, white wing patches on primaries, lack of dark flight feathers on underwing, unlikelihood of December sighting. Bald Eagle immature- (whitebelly I-II) was eliminated by the downpushing wingbeat, the colors of the bird's dorsal surface, the lack of a contrast on the dorsal surface between the brown-gray forward part of the wing and the darker flight feathers (a little known good fieldmark for Immature BE), and the confining of the white coloration to the primaries, etc. Red-tailed Hawk-This species, in light of its similar (but smaller) size and variable plumages, posed the greatest problems. The dark upper surface, dark head, pointed wings, and pattern of flight (dihedral in glide posture), as well as the distinct and identical nature of the white markings on the upperwings and the lack of patagial marks, "commas", or other dark markings on the underside, were considered in total and used to rule out the immature light-morph Red-tail and, on reflection, a partial albino Red-tail. Krider's Red-tailed Hawk was the toughest to rule out. Here are my reasons: 1. Krider's heads appear white/light in contrast to the darker (gray or brown) color of the back. This bird's head was not lighter in color (on top) than the back. Back coloring was too dark (brown-reddish) for Krider's-no white mottling seen. Wings were pointed not rounded. No 'headlight' fieldmark [sic] was seen and the 'points of light' fieldmark [sic] was. Dihedral in glide unusual but not impossible for a Red-tail, but the wingbeat (fluid and downpushing rather than centered on the downstroke at the wrist) did not look like a Red-tailed's. | The original documentation form event lasted from 09:00:00/09:01:00.
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Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Lee Township in Madison County, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-10-05
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Ferruginous Hawk at Lee Township in Madison County, IA on October 5, 1994. Includes a record review document with votes and a documentation form submitted to the committee.
|
Armstrong, Eloise
|
Ferruginous Hawk
|
Lee Township
|
Lee Twsp NE Madison County
|
Grasslands
|
The documentation form by Eloise Armstrong is the only one submitted and forms the basis of this record. Other observers include Eugene Armstrong. | Elimination of similar species: A redtailed Hawk has outer white tail band and Red or Barred Tail. Flight is quite rapid-wings are shorter and more rounded Has larger square window in wing Krider's Red Tail Does not have very white underwing. Has a larger square window Further out on wings. Has a dark stripe on tail. Doesn't have a white rump. | The original documentation form event lasted from 17:00:00/17:10:00.
|
Iowa Ornithologists' Union | MS 166
|
9
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1
|
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Records Committee review for rare bird sighting of Ferruginous Hawk at Otter Creek Marsh, 1984
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-12-23
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Otter Creek Marsh in Tama County, IA on December 23, 1984. Includes a record review document with votes, an article from Iowa Bird Life, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Ferruginous Hawk
|
Otter Creek Marsh State Wildlife Refuge
|
Otter Creek M., Tama Co., Iowa
|
large, wide riverbottom marsh with scattered woods.
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. | Elimination of similar species: According to Eckert, the upper wing patches are diagnostic if the location is right. He gives the following example as an acceptable documentation: 'On the upper surface of each wing there was a rectangular or oval white patch on the flight feathers. This patch was on the inner primaries, and perhaps faded a bit into the secondaries and outer primaries.' This description fits the bird I saw. Eckert gives two other diagnostic marks that I did not see (feathered legs, rufous back and shoulders), but only one of these three marks is needed. The white tail is not diagnostic, but coupled with the light underparts and generally dark upper wing surface, tends to exclude Krider's and Harlan's Hawks which would have light upper wings and dark underparts, respectively. An ordinary Red-tailed Hawk would not ordinarily have an all white-tail nor such prominent upper wing patches. The raised wings in flight in the absence of wind favor Ferruginous Hawk over Red-tailed and Rough-legged Hawks. Rough-legged Hawk is excluded by the lack of prominent black and white pattern to body, wing and tail. | The original documentation form event lasted from 14:45:00/14:57:00.
|
Iowa Ornithologists' Union | MS 166
|
9
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1
|
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Records Committee review for rare bird sighting of Ferruginous Hawk at Paulina, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-06-03
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Paulina in O'Brien County, IA on June 3, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Bierman, Dick
|
Ferruginous Hawk
|
Paullina
|
5 miles North of Paulina Iowa OBrien [sic] Co.
|
Flat, Agricultural, only farm Groves for Trees
|
The documentation form by Dick Bierman is the only one submitted and forms the basis of this record. | Elimination of similar species: Swainson's Hawk have dark primaries. Red Tails with light tails have a terminal band. This one didn't. Red Tails do not have dark legs that are feathered to the ankle. | The original documentation form event lasted from 08:15:00/08:18:00 and 09:40:00 to 09:50:00.
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Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
Records Committee review for rare bird sighting of Ferruginous Hawk at Port Louisa National Wildlife Refuge, 1995
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc Wildlife conservation
|
1995-03-22
|
2000-11-18
|
Rare birds documentation form
|
Records Committee review for a Ferruginous Hawk at Port Louisa National Wildlife Refuge in Louisa County, IA on March 22, 1995. Includes a record review document with votes, drawings of the bird, and a documentation form submitted to the committee.
|
Mattsson, James P
|
Ferruginous Hawk
|
Port Louisa National Wildlife Refuge - Louisa Division
|
Louisa Division of the Mark Twain National Wildlife Refuge near Wapello, Iowa.
|
|
The documentation form by James P. Mattsson is the only one submitted and forms the basis of this record. Other observers include Michael Bornstein. | Elimination of similar species: [...] The bird was most similar to the dark phase rough-legged hawk (Bureo lagopus) in size and general shape, but the latter species lacks the deep rust coloration on the upper wing coverts, scapulars, and upper back, and also has some dark banding on the outer one-half of the tail. Although by no means a conclusive characteristic, the subject bird did not hover during the period we observed it, a characteristic typical of hunting Rough-legged hawks. Dark phase Swainson's hawk have much darker, barred flight feathers and tail when viewed from below than that of the subject bird. | The original documentation form event lasted from 12:30:00/12:45:00.
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Iowa Ornithologists' Union | MS 166
|
9
|
1
|
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Records Committee review for rare bird sighting of Ferruginous Hawk at Princeton Marsh, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-05-08
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Princeton Marsh in Scott County, IA on May 8, 1990. Includes a record review document with votes and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Ferruginous Hawk
|
Princeton State Wildlife Management Area
|
Princeton Marsh, Scott Co., IA.
|
bird flying of marsh & agricultural area
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Brian Blevins and Don Moeller. | Elimination of similar species: Red-tailed Hawk no windows from above, legs white, has breast band, tail uniform rusty red. | The original documentation form event lasted from 13:30:00/13:32:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
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Records Committee review for rare bird sighting of Ferruginous Hawk at Rathbun Reservoir, 1986
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-02-01
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Rathbun Reservoir in Appanoose County, IA on February 1, 1986. Includes a record review document with votes, an article in Iowa Bird Life, a summary of the review, and a documentation form submitted to the committee.
|
Heusinkveld, Bill
|
Ferruginous Hawk
|
Rolling Cove Park
|
Rolling Cove Area, Rathbun Lake, Appanoose County
|
Perched in Large Tree in Grove next to Lake Rathbun
|
The documentation form by Bill Heusinkveld is the only one submitted and forms the basis of this record. Other observers include Marjorie Heusinkveld | Elimination of similar species: Red tail eliminated by complete lack of belly band, no red tail. | The original documentation form event lasted from 09:04:00/09:15:00.
|
Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Red Rock Reservoir, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-01-02
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Red Rock Reservoir in Marion County, IA on January 2, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Johnson, Ann
|
Ferruginous Hawk
|
Lake Red Rock
|
Lake Red Rock, Marion Co, IA
|
pasture with wooded draw to the south
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: This was a classic case of delayed reaction as I began sorting through in my mind as I drove down the road. The large size and bulk of the bird, plus the broad, rounded tail made it an obvious buteo. After double-checking all phases of the rough-legged hawk in Clark's Hawks, I once again eliminated rough-leg because of the nearly all white underparts. However, redtail wasn't fitting either, even a light phase, and a few miles down the road the ferruginous crossed my mind. I pulled off the road, made a few notes, and began researching with the guides at hand. The most troublesome field mark was the 'white tail with gray band.' I have seen numerous redtails give the white rump appearance but none have had the distinctive white tail/gray terminal band. There was absolutely no dark patagial marking on the underwing. The combination of field marks (or lack thereof) would seem to approach an immature Krider's redtail. I eliminated this bird because of the appearance of one, wide gray tail band and the more uniform coloring of the body - very little white mottling. Although I wish I'd had a longer look, I came to the conclusion that the combination of what I had observed pointed toward an immature ferruginous hawk. | The original documentation form event lasted from approximately 09:00:00/09:01:00.
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Iowa Ornithologists' Union | MS 166
|
9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Thornton, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-04-23
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review of a Ferruginous Hawk at Thornton in Cerro Gordo County, IA on April 23, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Fischer, Carolyn J.
|
Ferruginous Hawk
|
Thornton
|
North of Thorton [sic] on Eagle Ave. between 140-150 roads - Cerro Gordo County, Ia
|
shortgrass meadows, open area -
|
The documentation form by Carolyn Fischer forms the basis of this record. Another documentation form was submitted by Rita Goranson. | Elimination of similar species: Krider's Hawk (this hawk was larger in size than a Krider's | The original documentation form event lasted from 18:15:00/18:30:00.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Thornton, 1997
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Administrative records Clippings (information artifacts) Field notes Photographs
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Bird watching Ornithology Ornithology--Societies, etc
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1997-02-12
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2000-11-24
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk at Thornton in Cerro Gordo, IA on February 12, 1997. Includes a record review document with votes, a photo, an article in Iowa Bird Life, and five documentation forms submitted to the committee.
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Fischer, Carolyn J.
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Ferruginous Hawk
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Thornton
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S.W. Cerro Gordo Co. N.W. of Thornton
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open country
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The documentation form by Carolyn Fischer is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Jim Dinsmore, Thomas Kent, and Stephen Dinsmore were submitted later. Other observers include Dick Tetrault, Helen Fye, Dale Fye, Diane Porter, G. Foster, Chris Caster, Mike Overton, Dixie Overton, Rob Muilenburg, Jan Walter, Tim Phalen, Lowell Washburn, Gerald White, and many unidentified observers. | Elimination of similar species: Krider's Hawk - face wasn't all white + back wasn't heavily spotted. Also larger - Red-tailed Hawk - could not see dark patagial marks. Wingtips were long. Tail was not red - | The original documentation form event lasted from 14:30:00/15:20:00.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk east of Laurens, 1984
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Administrative records Clippings (information artifacts) Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1984-10-25
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1993-09-01
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk at Laurens in Pocahontas County, IA on October 25 and 26, 1984. Includes a record review document with votes, an article from Iowa Bird Life, and two documentation forms submitted to the committee.
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Carlson, Judith
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Ferruginous Hawk
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Laurens
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2 miles East Laurens, IA on Hiway [sic] 10
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Road Ditch Fench [sic] Line & Large Farm Grove
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The documentation form by Judith Carlson is the earliest and the one that forms the basis of this record. Other documentation forms by Ronald Harms were submitted later. Other observers include Helen Carlson. | Elimination of similar species: Red Tail are darker and stockier in appearance. Osprey - smaller, darker on back and eye stripe wider, lower & longer. Rough Legged darker all over on front. | The original documentation form event lasted from 17:45:00/18:15:00 and 10:30:00/11:25:00 on October 26, 1984.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk east of Osage, 1988
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1988-03-13
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1993-03-16
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk east of Osage in Mitchell County, IA on March 13, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
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Hartogh, Mary Jo
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Ferruginous Hawk
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Osage
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9 mi. E of Osage along a gravel road-Mitchell Co.
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Hayfield near a road
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The documentation form by Mary Jo Hartogh is the only one submitted and forms the basis of this record. Other observers include John Hartogh and Annjean Hartogh. | Elimination of similar species: Compared it with a bald eagle and red-tailed hawk which does not have large reddish patches where the legs would be held in flight, nor the outline inside the wings in the same color. A red-tail might have one or the other white, but not both tail and head in my experience. Also the red-tail usually has a darker shade of brown on its middle belly, if it has color there. The rough-legged has a dark tail band which at that proximity should have been seen and its color is also a darker brown. | The original documentation form event lasted from 08:25:00/08:26:00.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk east of Shenandoah, 1983
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Administrative records Clippings (information artifacts) Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1983-10-26
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1993-09-01
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk east of Shenandoah in Page County, IA on October 26, 1983. Includes a record review document with votes, an article in Iowa Bird Life, a summary of the review, and a documentation form submitted to the committee.
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Braley, Jean B.
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Ferruginous Hawk
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Shenandoah
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E. of Shenandoah on Highway #2
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The documentation form by Jean Braley is the earliest and the one that forms the basis of this record. Other observers include Francis Braley.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk in Cherokee County, 1985
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1985-03-28
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1993-09-03
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk in Cherokee County, IA on March 28, 1985. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.
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Brewer, Marion M.
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Ferruginous Hawk
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Cherokee County
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Hwy 7 & M 31
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Bean ground with some water ways (grass)
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The documentation form by Marion M. Brewer is the only one submitted and forms the basis of this record. | Elimination of similar species: Redtailed hawk, no horizontal streaking onthe [sic] belly and the rufous colored legs. | The original documentation form event lasted from 16:40:00/16:45:00.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk in Story County, 1985
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Administrative records Clippings (information artifacts) Correspondence Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1985-09-29
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1993-09-03
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Rare birds documentation form
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Records Committee review of a Ferruginous Hawk at Tiegs Marsh in Story County, IA on September 29, 1985. Includes a record review document with votes, correspondence about bird sightings, an article in Iowa Bird Life, and two documentation forms submitted to the committee.
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Dinsmore, Stephen J.
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Ferruginous Hawk
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Story County
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Tiegs Marsh, Story County
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in open cropland near a small marsh
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The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Fred J. Alsop were submitted later. Other observers include Dr. George Brown and Paul Martsching. | Elimination of similar species: Red-tailed hawk eliminated by lack of dark bar on leading edge of underwing, position of white wing patches, white tail with rusty tip, lack of belly band, and rust color on back and wings. Rough-legged hawk eliminated by lack of wrist marks, rust color on back and wings, all white legs, unbanded tail and lack of belly band. | The original documentation form event lasted from 09:30:00/09:35:00 and 10:10:00 to 10:15:00 estimated.
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Iowa Ornithologists' Union | MS 166
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9
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1
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