|
Records Committee review for rare bird sighting of Clark's Grebe at Cone Marsh, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-05-05
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Cone Marsh in Louise County, IA on May 5, 1983. Includes a record review document with votes, correspondence about the bird sighting from Bruce Peterjohn to Thomas H. Kent, and a documentation form submitted to the committee.
|
Sandrock, James P., 1929-
|
Clark's Grebe
|
Cone Marsh Wildlife Management Area
|
Cone Marsh (Louisa County)
|
Marsh; open pond.
|
The documentation form by James P. Sandrock is the earliest and the one that forms the basis of this record. Another observer includes James G. Huntington. | Elimination of similar species: The bird was significantly larger than Pied-billed Grebe; Eared Grebe; and Horned Grebe. | The original documentation form event lasted from 14:30:00/15:30:00.
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Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Diamond Lake, 1997
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-12-13
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Diamond Lake in Poweshiek County, IA on December 13, 1997. Includes a record review document with votes, photos, an Iowa Bird Life article, and five documentation forms submitted to the committee.
|
Allen, Pam Allen, Reid I.
|
Clark's Grebe
|
Diamond Lake
|
Poweshiek County, Diamond Lake Park
|
|
The documentation form by Pam and Reid Allen is the earliest and the one that forms the basis of this record. Other documentation forms by Mark Proescholdt, Thomas H. Kent, Phil Walsh, and Michael D. Overton were submitted later. Other observers include Jim Sinclair, Ann Johnson, Eugene Armstrong, Dixie Overton, Cal Knight, Bernie Knight, and Eloise Armstrong. | Elimination of similar species: The Western Grebe (Aechmorphorus occidentalis) has a much duller, greyish-greenish yellow bill and the body and flanks are blacker. Plus, the black cap extends over the eyes and lores, and there is a more solid blackish cast on the bill. | The original documentation form event lasted from 12:15:00/14:10:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Hendrickson Marsh, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-05-30
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for three Clark's Grebes at Hendrickson Marsh in Story County, IA on May 30, 1986. Includes a record review document with votes, a summary of the review, and two documentation forms submitted to the committee.
|
Martsching, Paul
|
Clark's Grebe
|
Hendrickson Marsh Lake
|
Hendrickson Marsh, Story County, Iowa
|
shallow open water "lake" with quite a bit of marshy area adjacent.
|
The documentation form by Paul Martsching is the earliest and the one that forms the basis of this record. Another documentation form by Steve Dinsmore was submitted later. Other observers include Beth Proescholdt, Mark Proescholdt, and Hank Zaletal. | Elimination of similar species: Western is dark immediately around the eye. Red necked is reddish on front and sides of neck this time of year, with white confined to chin, throat and cheek. | The original documentation form event lasted from 20:00:00/20:30:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Lost Island Lake, 1998
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1998-11-22
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Lost Island Lake in Palo Alto County, IA on November 22, 1998. Includes a record review document with votes and a documentation form submitted to the committee.
|
Schoenewe, Lee A.
|
Clark's Grebe
|
Lost Island Lake
|
Lost Island Lake, Palo Alto County
|
Open water
|
The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. another observer was Nancy P. Schoenewe. | Elimination of similar species: Western Grebe - Face pattern with white behind and over the eye; overall light gray body color with white splotching on sides and back. | The original documentation form event lasted from 15:15:00/16:20:00.
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Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Pleasant Creek Lake, 1995
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-11-12
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Pleasant Creek Lake in Linn County, IA on November 12, 1995. Includes a record review document with votes, an article in Iowa Bird Life, and three documentation forms submitted to the committee.
|
Edwards, Chris
|
Clark's Grebe
|
Pleasant Creek State Park
|
Pleasant Creek State Recreation Area, Linn Co.
|
Lake
|
The documentation form by Chris Edwards is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent and Jim Fuller were submitted later. Other observers include Alan Martin, Pete Wickham, John Daniel, Dick Tetrault, Dale Fye, Jim Scheib, Eloise Armstrong, Eugene Armstrong, and Helen Fye. | Elimination of similar species: Western Grebe has a dull greenish yellow bill; black or gray lores; black or gray surrounding the eye; and a more uniformly dark back and flanks. | The original documentation form event lasted from 10:30:00/11:30:00, 12:30:00/13:15:00, and 13:45:00/15:45:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Saylorville Reservoir, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-10-01
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Saylorville Reservoir in Polk County, IA on October 1, 1987. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Clark's Grebe
|
Saylorville Dam
|
Saylorville Reservoir, Polk Co.-above dam
|
resting on large reservoir
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: Western Grebe eliminated on the basis of this birds paler flanks and white color on the face extending well above the eye. I saw numerous Western Grebes at Saylorville this fall, and none of them had nearly as much white on the face as the bird I saw on 1 Oct. | The original documentation form event lasted from 14:35:00/15:05:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at South Twin Lake, 1994
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-11-25
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at South Twin Lake in Calhoun County, IA on November 25, 1994. Includes a record review document with votes, a photo, an Iowa Bird Life article, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Clark's Grebe
|
South Twin Lake
|
South Twin L., Calhoun Co., IA
|
shallow lake
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Another observer was Susan B. Grove. | Elimination of similar species: The short body, longer neck, and bright orange bill color eliminates all species of loons. The only other similar species is Western Grebe, which has a dulller yellowish bill and dark lores and dark color around the eyes. | The original documentation form event lasted from 08:25:00/08:55:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Trumbull Lake, 1994
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-05-13
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Trumbull Lake in Clay County, IA on May 13, 1994. Includes a record review document with votes, an Iowa Bird Life, and a documentation form submitted to the committee.
|
Brewer, Marion M.
|
Clark's Grebe
|
Trumbull Lake
|
Trumble Lake
|
Lake
|
The documentation form by Marion W. Brewer is the only one submitted and forms the basis of this record. | Elimination of similar species: Western, White in front, over & behind eye. | The original documentation form event lasted from 12:30:00/12:50:00 and 13:15:00/13:48:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir, 1989
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-02
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review for a Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on November 2, 1989. Includes a record review document with votes, an article in Iowa Bird Life, photocopies of four photographs, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Black-headed Gull
|
Cherry Glen Recreation Area
|
Saylorville Reservoir, Polk Co.-off Cherry Glen Rec. Area
|
large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by B.J. Rose was submitted later. Other observers include Doug Rose, Roger Rose, and Ken Lowder. | Elimination of similar species: Because of the fairly small size and conspicuous dark spot behind each eye, the bird must have been a Bonaparte's, Little, Common Black-headed, or Ross' gull, or a kittiwake. Separation from Bonaparte's Gull is discussed above. Little Gull eliminated by its smaller size, dark bill, lack of any black color on the upperwing, and uniformly dark underside to the flight feathers. Ross' Gull eliminated by tail shape, bill size and color, and darker underwing. Both kittiwakes eliminated by bill color, lighter mantle color, and differences in wing pattern. | The original documentation form event lasted from 16:17:00/16:42:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
21
|
|
Records Committee review for rare bird sighting of Common Eider at Jester Park, 1995
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-03-26
|
2000-11-18
|
Rare birds documentation form
|
Records Committee review of a Common Eider at Jester Park, Saylorville Reservoir in Polk County, IA on March 26, 1995. Includes a record review document with votes and a documentation form submitted to the committee.
|
Johnson, Ann
|
Common Eider
|
Jester Park
|
off Jester Park boat ramp, Saylorville Reservoir, Polk County, IA
|
open water
|
The documentation form by Ann Johnson is the earliest and the one that forms the basis of this record. | Elimination of similar species: ID based solely on head profile whichwas [sic] identical to the Red Rock bird studied at length earlier in the year. | The original documentation form event lasted from 16:55:00/17:00:00.
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Iowa Ornithologists' Union | MS 166
|
8
|
18
|
|
Records Committee review for rare bird sighting of Common Eider at Red Rock Reservoir, 1995
|
Administrative records Clippings (information artifacts) Correspondence Field notes Forms (documents) Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-01-27
|
2000-11-18
|
Rare birds documentation form
|
Records Committee review of a Common Eider at Red Rock Reservoir in Marion County, IA on January 27, 1995. Includes a record review document with votes, correspondence over the sighting, photos, drawings of the bird sighting, articles in Iowa Bird Life, Field Notes, and other publications, and twelve documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Common Eider
|
Red Rock Dam
|
Des Moines River below Red Rock dam - Marion Co., Iowa
|
open stretch of river
|
The documentation form by Stephen J. Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Dinsmore, Thomas H. Kent, Jim Fuller, Reid Allen, Ann Johnson, Mark Proescholdt, Chris Edwards, Peter C. Petersen, Ray Cummins, Robert Cecil, and Diane Porter were submitted later. | Elimination of similar species: See above discussion (Description). Steller's Eider eliminated by size. Female and immature King Eider eliminated by pattern of barring on flanks, size of bill, position of eye, faint white supercilium, and pattern of feathering on bill. Spectacled Eider eliminated by facial pattern and bill shape. | The original documentation form event lasted from 13:45:00/15:05:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
18
|
|
Records Committee review for rare bird sighting of Common Raven west of Mason City, 1966
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1966-12-28
|
1994-11-04
|
Rare birds documentation form
|
Records Committee review for a Common Raven west of Mason City in Cerro Gordo County, IA on December 28, 1966. Includes a record review document with votes and a documentation article submitted to the committee.
|
Roosa, Dean M.
|
Common Raven
|
Mason City
|
[...] driving from Clear Lake to Mason City
|
|
The documentation article by Dean M. Roosa forms the basis of this record. Other observers include Paul Bailey. | Elimination of similar species: [...] Its flight pattern, size, and rounded or wedge-shaped tail distinguished it from nearby Crows.
|
Iowa Ornithologists' Union | MS 166
|
12
|
47
|
|
Records Committee review for rare bird sighting of Curlew Sandpiper at Cedar Lake, 1985
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-05-10
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Curlew Sandpiper at Cedar Lake in Chickasaw County, IA on May 10, 1985. Includes a record review document with votes, an article in Iowa Bird Life and a documentation form submitted to the committee.
|
Moore, Francis L.
|
Curlew Sandpiper
|
Cedar Lake
|
Cedar Lake on Cedar River at Nashua, Chickasaw Co., Iowa
|
Open mud flat with sparse emergent vegetation near open lake.
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. | Elimination of similar species: Red Knot has straight black bill and is larger than Pectoral Sandpiper. Sanderling is about same size but also has a straight black bill not long, thin and decurved as in this bird. | The original documentation form event lasted from 08:45:00/10:45:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
7
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
10
|
7
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
8
|
14
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
8
|
14
|
|
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
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
8
|
14
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
8
|
14
|
|
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
|
14
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
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
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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
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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 both Oxford and Homestead, 1979
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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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1979-02-03
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1994-02-03
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Rare birds documentation form
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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.
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Hollis, Richard Jule
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Ferruginous Hawk
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Township of Oxford
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N Eastern Oxford Township, Johnson Co., Iowa
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perched on hedge rows or wood edges over snow covered fields
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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.
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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 Hichcock Nature Area, 1999
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1999-12-05
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2000-11-28
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Rare birds documentation form
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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.
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Orsag, Mark
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Ferruginous Hawk
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Hitchcock Nature Area
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Hitchcock Nature Area (Lodge Hawkwatch Point)
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Loess Hills / Missouri River Valley. The bird was coming from out of the valley. It crossed the wooded ridges of HNA and headed southeast.
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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
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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 Lee Township in Madison County, 1994
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1994-10-05
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1996-04-25
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Rare birds documentation form
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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.
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Armstrong, Eloise
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Ferruginous Hawk
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Lee Township
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Lee Twsp NE Madison County
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Grasslands
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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