|
Records Committee review for rare bird sighting of Mew Gull at Lock and Dam 19 at Keokuk, 1998
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1998-12-21
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Mew Gull at Lock and Dam 19 at Keokuk in Lee County, IA on December 21, 1998. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Lock Number 19
|
Lock and Dam 19, Keokuk, Lee County, Iowa
|
feeding below dam of a large river
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Other observers were Aaron Brees and many unidentified other observers. | Elimination of similar species: The combination of a smaller bill, more extensive dark brown color on the underparts, darker gray mantle, and solidly dark rectrices eliminated the similar Ring-billed Gull. | The original documentation form event lasted from 12:25:00/13:00:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Saylorville Reservoir, 1998
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1998-12-20
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Mew Gull at Saylorville Reservoir in Polk County, IA on December 20, 1998. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Saylorville Lake
|
Saylorville Reservoir, Polk County, Iowa
|
feeding in spillway and resting on large reservoir
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Another observer was Kay Niyo. | Elimination of similar species: The only similar species (Ring-billed Gull) was eliminated by the combination of slightly smaller size, smaller bill, more extensive brown color on the underparts, and pattern of the rectrices. | The original documentation form event lasted from 13:46:00/14:08:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Red Rock Reservoir Dam, 1997
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-12-20
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Mew Gull at Red Rock Reservoir Dam in Marion County, IA on December 20, 1997. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Red Rock Dam
|
Red Rock Reservoir, Marion Co., IA
|
large reservoir
|
The documentation form by Stephen J. Dinsmore forms the basis of this record. Another documentation form by Michael D. Overton was submitted. Other observers include Maridel Jackson, Ann Johnson, Aaron Brees, Gordon Brand, and many other unidentified observers. | Elimination of similar species: The wing pattern, size, and lack of black marks on the face eliminated any of the smaller gulls (i.e. Bonaparte's). The small size and smaller bill size eliminated California Gull. Ring-billed Gull was eliminated on the basis of the darker mantle and upperwings, large, dark eye, and bill color and shape. | The original documentation form event lasted from 15:30:00/16:40:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Saylorville Reservoir, 1996
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-11-29
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Saylorville Reservoir in Polk County, IA on November 29, 1996. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co., IA
|
large reservoir
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The wing pattern, size, and lack of black marks on the face eliminated any of the smaller gulls (i.e. Bonaparte's). The small size and smaller bill size eliminated California Gull. Ring-billed Gull was eliminated on the basis of the darker mantle and upperwings, large, dark eye, and bill color and shape. | The original documentation form event lasted from 16:03:00/16:41:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Lake Rathbun, 1995
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-11-04
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Lake Rathbun in Appanoose County, IA on November 4, 1995. Includes a record review document with votes and a documentation form submitted to the committee.
|
Cummins, Raymond L.
|
Mew Gull
|
Rathbun Lake
|
Lake Rathbun Appanoose Co.
|
Sandy beach with about 50 other gulls including Ring-billed, Franklin's, Bonaparte's and the 1st winter Mew Gull. After about 20 min the bird departed to the north with about a dozen other gulls. Did not see them take off.
|
The documentation form by Ray Cummins is the only one submitted and forms the basis of this record. | Elimination of similar species: See Ring-billed Gull comparicons [sic] above. [...] The size was slightly but noticeably smaller than all the Ring-billeds present. The head was more rounded in appearance than the ring-billeds. The bill was smaller in portion than the Ring-billeds, both shorter and thinner. [...] The tail was black, but not as black as side by side comparisons with the adult Ring-billeds. | The original documentation form event lasted from 07:45:00/08:05:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Fairport Fish Hatchery, 1995
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-09-08
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Fairport Fish Hatchery in Muscatine County, IA on September 8, 1995. Includes a record review document with votes, correspondence from Peter Petersen to Thomas H. Kent, and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Mew Gull
|
Fairport State Fish Hatchery
|
Fairport Fish Hatchery, Muscatine Co. IA
|
Fish rearing ponds + adj. Miss. River
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. | Elimination of similar species: Ring-billed Gull- much more black on primary tips, black ring on yellow bill | The original documentation form event lasted from 08:05:00/08:10:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Red Rock Reservoir Dam, 1994
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-12-11
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Red Rock Reservoir Dam in Marion County, IA on December 11, 1994. Includes a record review document with votes, an article in Iowa Bird Life, and four documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Red Rock Dam
|
below Red Rock Reservoir dam, Marion Co., IA
|
spillway
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Jim Sinclair, Ray Cummins, and Thomas H. Kent were submitted. Other observers include Tim Schantz, Jim Fuller, and many unidentified observers. | Elimination of similar species: The only species with which this bird could be confused is Ring-billed Gull. The tail and wing patterns, generally darker coloration, large eye, and smaller bill all eliminate first-winter Ring-billed Gull. Identification to subspecies was based on tail pattern and more extensive dark color on head and underparts. | The original documentation form event lasted from 07:20:00/08:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Lakeview Recreation Area at Saylorville Reservoir, 1993
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-12-20
|
1996-01-25
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Lakeview Recreation Area at Saylorville Reservoir in Polk County, IA on December 20, 1993. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Mew Gull
|
Lakeview Recreation Area
|
Saylorville Reservoir, Polk Co., IA-on jetty at Lakeview Rec. Area
|
perched on jetty with other gulls
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Other observers include Susan Grove, Eugene Armstrong, and Eloise Armstrong. | Elimination of similar species: On the basis of size and general plumage characters, this species could only be confused with Ring-billed Gull, hundreds of which were available for direct comparison. The combination of slightly smaller size, distinct head shape, bill color and shape, dark eye, and slightly darker mantle and upperwings are sufficient to eliminate Ring-billed Gull. | The original documentation form event lasted from 15:42:00/16:53:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Whitebreast Recreation Area at Red Rock Reservoir, 1993
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-12-19
|
1995-07-25
|
Rare birds documentation form
|
Records Committee review for a Mew Gull at Whitebreast Recreation Area at Red Rock Reservoir in Marion County, IA on December 19, 1993. Includes a record review document with votes, an article in Iowa Bird Life, and three documentations submitted to the committee.
|
Johnson, Ann
|
Mew Gull
|
Whitebreast Recreation Area
|
Whitebreast Recreation Area, Red Rock Reservoir, Marion Co., IA
|
Sandy area at edge of open water
|
The documentation form by Ann Johnson forms the basis of this record. Other documentation forms by Russ Widner and Jim Fuller were submitted. Other observers include Dick Tetrault and Roy Godwin. | Elimination of similar species: Size eliminated any gull larger than a Ring-billed. Although structurally the bird more closely represented one of the larger hooded gulls, they were eliminated by the lack of any hood or auricular spot. Furthermore, most hooded gulls with a tail band would also show a strong carpal bar. Laughing Gull could be eliminated by the more diminuative [sic] bill and leg color. Although some individuals seem to carry a vestige of their more motley juvenile plumage into first winter, Ring-billed Gull was eliminated by size, head and bill structure, and clear-cut as opposed to more diffuse tail band. I originally identified this bird as a Mew Gull based on my experience studying structural differences between Ring-billed and Mew gulls on the west coast. I have never seen a first-year Mew Gull, however. In researching the Mew on my return home, I concluded that the bird in question was not dark enough, nor brown enough, to be of the west coast sub-species. By virtue of its strong similarity to a Ring-billed Gull, this bird was most likely the European sub-species known as the Common Gull. Although according to Grant the bill description comes closer to L.c. brachyrhynchus, I assume that this bird's bill coloration was still changing from juvenile plumage. Apparently the Common Gull appears on occasion on the east coast and is therefore probably as likely a vagrant to Iowa as is the western form. | The original documentation form event lasted from 10:30:00/10:40:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Sandpiper Recreation Area at Saylorville Reservoir, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-10-13
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Mew Gull at Sandpiper Recreation Area at Saylorville Reservoir in Polk County, IA on October 13, 1990. Includes a record review document with votes and a documentation form submitted to the committee.
|
Lowder, Ken
|
Mew Gull
|
Sandpiper Recreation Area
|
Sandpiper Rec. Area, Saylorville Reservoir, Polk Co., IA.
|
Sand spit
|
The documentation form by Ken Lowder is the only one submitted and forms the basis of this record. Other observers include Peter Wickham and John Daniel. | Elimination of similar species: Ring billed Gull (second winter) - light iris & yellow legs; head shape; white in primaries | The original documentation form event lasted from 14:15:00/15:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
Records Committee review for rare bird sighting of Mew Gull at Lock and Dam 14, 1982
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-12-19
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Mew Gull at Lock and Dam 14 in Scott County, IA on December 19, 1982. Includes a record review document with votes, an article in Iowa Bird Life, a summary of the review, comments and correspondence on the sighting, and five documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Laughing Gull
|
Lock and Dam 14
|
Lock and Dam 14, Scott Co. Iowa
|
Mississippi River
|
The documentation form by Thomas H. Kent forms the basis of this record. Other documentation forms by Thomas J. Staudt, Peter C. Petersen, Tim Dwyer, and Francis L. Moore were submitted. Other observers include Don Moeller, Jean Moeller, Mary Lou Petersen, Bob Linden, Clark Scott, and Larry Linder. | Elimination of similar species: Separated from Ring-bill by gray head and mantle, wing-tip, size, character of terminal tail band, and bill color and shape. Separated from Franklin's by wing tip pattern (in face of nearly white tail, ie 2nd year bird) | The original documentation form event lasted from approximately 09:40:00/09:50:00 and 14:15:00/14:45:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
23
|
|
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
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
Records Committee review for rare bird sighting of Ferruginous Hawk east of Shenandoah, 1983
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-10-26
|
1993-09-01
|
Rare birds documentation form
|
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.
|
Braley, Jean B.
|
Ferruginous Hawk
|
Shenandoah
|
E. of Shenandoah on Highway #2
|
|
The documentation form by Jean Braley is the earliest and the one that forms the basis of this record. Other observers include Francis Braley.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
Record Committee review for rare bird sighting of Ferruginous Hawk west of Conesville, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-04-29
|
1993-08-05
|
Rare birds documentation form
|
Record Committee review of a Ferruginous Hawk west of Conesville on edge of Louisa and Muscatine County, IA on April 29, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Ferruginous Hawk
|
Conesville
|
1 mi. W. conesville edge of Muscatine and Louise Cos., IA
|
cultivated fields
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Brian, Corey, and Lewis Blevins. | Elimination of similar species: Rough-legged hawk - underwing would show more dark in the underwing coverts, well defined tail band. Kriders Red-tail - has a very light head. | The original documentation form event lasted from 13:45:00/13:50:00.
|
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
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
Records Committee review for rare bird sighting of Ferruginous Hawk east of Osage, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-03-13
|
1993-03-16
|
Rare birds documentation form
|
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.
|
Hartogh, Mary Jo
|
Ferruginous Hawk
|
Osage
|
9 mi. E of Osage along a gravel road-Mitchell Co.
|
Hayfield near a road
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
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
|
1
|
|
Records Committee review for rare bird sighting of Ferruginous Hawk in Story County, 1985
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-09-29
|
1993-09-03
|
Rare birds documentation form
|
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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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 at Otter Creek Marsh, 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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1984-12-23
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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 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.
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Kent, Thomas H. (Thomas Hugh), 1934-
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Ferruginous Hawk
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Otter Creek Marsh State Wildlife Refuge
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Otter Creek M., Tama Co., Iowa
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large, wide riverbottom marsh with scattered woods.
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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.
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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 west of Liscomb, 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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1984-09-22
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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 west of Liscomb in Marshall County, IA on September 22, 1984. Includes a record review document with votes, two articles in Iowa Bird Life, notes about Ferruginous Hawk sightings in Iowa, and two documentation forms submitted to the committee.
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Proescholdt, Mark
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Ferruginous Hawk
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Liscomb
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Just west of Liscomb - (Marshall County)
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Open country over cultivated farm fields - Iowa River 1/2 mile away
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The documentation form by Mark Proescholdt forms the basis of this record. Another documentation form was submitted by Beth Proescholdt. | Elimination of similar species: Red-tailed hawks do not have definite light wing patches or "windows" on the inner primaries. | The original documentation form event lasted from 09:30:00/09:32:00.
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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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