|
Rare bird documentation form for Black-legged Kittiwake at Red Rock Dam, 1990
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1990-12-24
|
1990-12-26
|
Rare birds documentation form
|
Rare bird documentation form for a Black-legged Kittiwake at Red Rock Dam in Marion County, IA on December 24, 1990.
|
Johnson, Ann
|
Black-legged Kittiwake
|
Red Rock Dam
|
below dam, Red Rock Reservoir, Marion Co., IA
|
Open water
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: Red-legged Kittiwake would be the only other gull with a semblance of collar at this time of year. It is eliminated by the black bar on the wings and back and the black tailband. | The original documentation form event lasted from 15:00:00/15:15:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
40
|
|
Rare bird documentation form for Great Black-backed Gull at Lock and Dam 16, 1998
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1998-12-27
|
1999-01-02
|
Rare birds documentation form
|
Rare bird documentation form for a Great Black-backed Gull at Lock and Dam 16 in Muscatine County, IA on December 27, 1998.
|
Blevins, Brian L.
|
Great Black-backed Gull
|
Mississippi River Lock Dam Number Sixteen
|
Below Lock + Dam #16 in Muscatine County, Muscatine, Iowa
|
Below Lock + Dam #16 on the shoreline of Muscatine, Iowa. Mississippi River plus boat harbor that is iced over where the gulls like to roost.
|
The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey T. Blevins. | Elimination of similar species: Pink feet eliminates - Yellow footed Lesser Black-backed Size + Jet Black mantle eliminates - Western Slaty-Backed | The original documentation form event lasted from 08:52:00/09:02:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
38
|
|
Rare bird documentation form for Great Black-backed Gull at Lock and Dam 14, 1996
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1996-01-02
|
1996-02-26
|
Rare birds documentation form
|
Rare bird documentation form for a Great Black-backed Gull at Lock and Dam 14 in Scott County, IA on January 2, 1996.
|
Dinsmore, Stephen J.
|
Great Black-backed Gull
|
Lock and Dam 14
|
below Lock and Dam 14, Davenport, Scott Co., IA
|
resting on large river
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Other observers include Jim Dinsmore and Kelly McKay. | Elimination of similar species: The combination of large size, coal black mantle and upperwings, and massive bill eliminates all other larids. | The original documentation form event lasted from 15:50:00/16:30:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
38
|
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 in Keokuk, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-01-03
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Lock and Dam 19 in Keokuk in Lee County, IA on January 3, 1987. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Moore, Francis L.
|
Thayer's Gull
|
Lock Number 19
|
Below lock and dam 19, Keokuk, Lee Co., Iowa
|
Open water below lock and dam 19
|
The documentation form by Francis L. Moore forms the basis of this record. Another documentation form by Steve Dinsmore was submitted. Another observer includes Robert Cecil. | Elimination of similar species: Herring Gull has more black in the primaries with a grayer mantle, a larger bill and heavier and bigger head. The under surface of the primaries of a Herring is also darker and has the darkness well into the primaries from the tips. | The original documentation form event lasted from 10:30:00/10:40:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
|
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-11-21
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 21, 1990. Includes a record review document with votes and a documentation form submitted to the committee.
|
Fuller, James L
|
Thayer's Gull
|
Red Rock Dam
|
Below Red Rock Dam- Marion County
|
River
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. Other observers include Ann Johnson, Chuck Fuller, and Jane Fuller. | Elimination of similar species: Herring Gull (first winter) compared above. [...] I first saw this bird flying, and the underwing was translucent throughout the primaries to the end of the wing (Herring Gull had dark outer primaries, although most also had a lighter window type area medial to this dark area). The bird was about the same size or a little smaller than the Herrings. The upperwing in flight was much lighter in the primaries than the first winter herrings. [...] It had a more rounded head than the herrings. [...] It's color was more uniform than the herrings and also lighter- a brownish color. There was a dark smudge around the eye. The feather edging (whitish) provided more contrast with the brown on the back than in the herrings, and the folded tail was brownish, not black. When in flight the tail band was brownish not blackish like the herrings. | The original documentation form event lasted from 13:15:00/13:45:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Red Rock Dam, 1996
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-11-27
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Red Rock Dam in Marion County, IA on November 27, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Red Rock Dam
|
below Red Rock dam, Marion Co., IA
|
dam tailwaters
|
The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The most similar-appearing species is first-basic Herring Gull. The combination of slightly smaller size, longer wings, whiter rump, more speckled mantle, contrast between the darker mantle and lighter head, and darker upperwings lacking a pale "window" eliminated Herring Gull in first-basic plumage. | The original documentation form event lasted from 15:22:00/15:40:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Iceland Gull at Red Rock Reservoir Dam, 1991
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-03-13
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for an Iceland Gull at Red Rock Reservoir Dam in Marion County, IA on March 13, 1991. Includes a record review document with votes, seven photographs, an article in Iowa Bird Life, correspondence about bird sighting and review, and eleven documentation forms submitted to the committee.
|
Schantz, Tim
|
Iceland Gull
|
Red Rock Dam
|
Below Red Rock Dam, Marion County, Iowa
|
|
The documentation form by Tim Schantz is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Ann Johnson, Thomas H. Kent, Diane Porter, Jim Sinclair, Stephen Dinsmore, James Dinsmore, Beth Proescholdt, and Mark Proescholdt were submitted later. Other observers include Dawn DeVore, Dick Tetrault, Jim Scheib, Beth Brown, Michael Porter, Eugene Armstrong, Eloise Armstrong, and many unidentified observers. | Elimination of similar species: [...] Iowa Birds mentions that there is a problem separating Iceland with Thayers. If there was any problem with this bird being anything it was a Glaucous Gull of the same age. However the bird was smaller than the Herring Gulls that were on the roost. Long wings will rule out the rare small race of Glaucous Gull. There are not to [sic] many birds that have primaries lighter than the mantle in the sitting bird.
|
Iowa Ornithologists' Union | MS 166
|
11
|
4
|
|
Rare bird documentation form for Thayer's Gull at Red Rock Dam, 1993
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1993-12-24
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Red Rock Dam in Marion County, IA on December 24, 1993.
|
Johnson, Ann
|
Thayer's Gull
|
Red Rock Dam
|
Below Red Rock Dam, Marion County, Iowa
|
Open river with gravel bars
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. Other observers include Raymond Cummins. | Elimination of similar species: Dark eye and head/bill structure eliminated Herring Gull. | The original documentation form event lasted from 11:20:00/11:30:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
35
|
|
Records committee review for rare bird sighting of Lesser Black-backed Gull at Red Rock Dam, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-10-05
|
1993-08-06
|
Rare birds documentation form
|
Records committee review for a Lesser Black-backed Gull at Red Rock Dam in Marion County, IA on October 5, 1989. Includes a record review document with votes and four documentation forms submitted to the committee.
|
Johnson, Ann
|
Lesser Black-backed Gull
|
Red Rock Dam
|
Below Red Rock Dam, near Pella, Marion Co., IA
|
River with numerous sand and gravel bars
|
The documentation form by Ann Johnson forms the basis of this record. Other documentation forms by Jim Sinclair, Raymond Cummins, and James Fuller were submitted. Other observers include Marlys Huff, David Youngblut, Pete Wickham, John Daniel, and Ken Lowder. | Elimination of similar species: Great Black-backed Gull- The bird was not large enough nor was the bill as massive. The great black-backed should also show a whiter head and lighter inner primaries and the back would be more of a checkerboard than the scaliness of this bird. Herring Gull- Because of variability, eliminating the herring was more problematic. Size was not particularly helpful initially in that this bird was near the second-year herring gull for such a brief time that I really couldn't make comparison. The variable sizes of ring-bills were of no help because next to some it looked huge and next to others it was only some larger. Some subtle differences were helpful in making this bird "look different" but I don't believe they could be considered sufficient. The checkered, scaly look was more pronounced than most juvenile herrings. The wings seemed long as they extended beyond the tail. The bill was entirely black and the tail band more distinct than most juvenile herrings. The color distinction between the head/tail and body from a distance were also helpful. The clincher, however, was during flight when no "windows" were visible on the inner primaries and the dark secondary coverts created a wide, dark trailing edge to the wing. These flight indicators, as well as size differential, were confirmed on the 23 October sighting. | The original documentation form event lasted from 15:10:00/16:00:00 and 16:15:00/16:40:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Rare bird documentation form for Black-legged Kittiwake at Red Rock Dam, 1988
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1988-12-14
|
1988-12-25
|
Rare birds documentation form
|
Rare bird documentation form for a Black-legged Kittiwake at Red Rock Dam in Marion County, IA on December 14, 1988.
|
Proescholdt, Mark
|
Black-legged Kittiwake
|
Red Rock Dam
|
Below Red Rock Reservoir dam - (Marion Co.)
|
River channel just below dam
|
The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Brown, Ann Johnson, Eugene Armstrong, and Eloise Armstrong. | Elimination of similar species: No gull quite looks like this. A first-year Little Gull has a black bar over its nape also, but has a dark cap on its head. | The original documentation form event lasted from 11:50:00/13:30:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
40
|
|
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 Lesser Black-backed at Red Rock Reservoir Dam, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-12-11
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Red Rock Reservoir Dam in Marion County, IA on December 11, 1994. Includes a record review document with votes and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Red Rock Dam
|
below Red Rock Reservoir dam, Marion Co., IA
|
spillway below dam
|
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting for Ivory Gull at Red Rock Reservoir Dam, 1990
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-12-24
|
1999-10-15
|
Rare birds documentation form
|
Records Committee review for an Ivory Gull at Red Rock Reservoir Dam in Marion County, IA on December 24, 1990. Includes a record review document with votes, an Iowa Bird Life article and front page, a page from American Birds, an article in Knoxville Journal Express, and eleven documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Ivory Gull
|
Red Rock Dam
|
below Red Rock Reservoir dam, Marion Co., IA
|
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Ann Johnson, Mark Proescholdt, Randall Pinkston, Thomas H. Kent, Raymond Cummins, Jim Fuller, Carl Bendorf, Tanya Bray, Peter Petersen, and Diane Porter were submitted. Other observers include James Huntington, Alan Grenon, Rick Wright, Jim Scheib, Eloise Armstrong, Eugene Armstrong, Bob Myers, B.J. Rose, Ken Lowder, John Daniel, Carol Thompson, Tim Schantz, Reid Allen, Pam Allen, Beth Proescholdt, Beth Brown, Curt Nelson, Babs Padelford, Loren Padelford, Dick Tetrault, Jim Dinsmore, Kelly McKay, Mary Lou Petersen, and many unidentified observers. | Elimination of similar species: The bird was really quite distinctive and not likely to be confused with any other gull. The white plumage, black legs, bill shape and color, dark area at base of bill, and pattern of black spots on wings and body eliminates all other gulls. | The original documentation form event lasted from 13:02:00/16:54:00 on December 24, 1990.
|
Iowa Ornithologists' Union | MS 166
|
11
|
12
|
|
Rare bird documentation form for Laughing Gull at Saylorville Dam, 1999
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1999-04-16
|
1999-04-19
|
Rare birds documentation form
|
Rare bird documentation form for a Laughing Gull at Saylorville Dam in Polk County, IA on April 16, 1999.
|
Thompson, Dennis
|
Laughing Gull
|
Saylorville Dam
|
Below Saylorville Dam, Polk Co. Ia
|
|
The documentation form by Dennis Thompson is the only one submitted and forms the basis of this record. | Elimination of similar species: Franklin's + this bird were swimming side by side. Bill longer, bulkier. No white in the wing tips while resting. Stretched its wings once, with no white visible in the primaries nor any white bar separating the gray wing from the black primaries. White spots + bar visible in nearby Franklin's. Direct size comparison noted above. | The original documentation form event lasted from 15:30:00/15:40:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
31
|
|
Records Committee review for rare bird sighting of Laughing Gull at Saylorville Dam, 1993
|
Administrative records Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-09-18
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Laughing Gull at Saylorville Dam in Polk County, IA on September 18, 1993. Includes a record review document with votes, a photograph, and a documentation form submitted to the committee.
|
Johnson, Ann
|
Laughing Gull
|
Saylorville Dam
|
Below Saylorville Dam, Polk County, IA
|
Fast moving river with many small fish
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: The body and bill structure eliminated all but hooded gulls and the brown plumage indicated a first year bird. Size close to Ring-billed, in addition to plumage already described, eliminated some of the smaller hooded gulls. The most likely candidate for confusion would be the Franklin's Gull. Juvenile Franklin's shows a hooded pattern early in development rather than a brown wash on the head. Franklin's tail band would also be incomplete with white feathers showing on the outer edge. It would also show fewer dark primaries, with the inner flight feathers more approximating the mantle and inner wing color. No other small gull has this characteristic. | The original documentation form event lasted from 11:45:00/12:10:00 and 15:30:00/14:00:00 [sic].
|
Iowa Ornithologists' Union | MS 166
|
10
|
18
|
|
Rare bird documentation form for Glaucous Gull at Red Rock Dam, 1990
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1990-11-21
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Glaucous Gull at Red Rock Dam in Marion County, IA on November 21, 1990.
|
Fuller, James L
|
Glaucous Gull
|
Red Rock Dam
|
Below the dam - Red Rock Reservoir - Marion County
|
River
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. Other observers include Ann Johnson, Chuck Fuller, and Jane Fuller. | Elimination of similar species: Iceland Gull is smaller; first winter bird has smaller all dark bill. | The original documentation form event lasted from 12:34:00/13:15:00 and 14:05:00/14:25:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
37
|
|
Records Committee review for rare bird sighting of Ross's Gull in Red Rock Dam, 1993
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-10-31
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Ross's Gull in Red Rock Dam in Marion County, IA on October 31, 1993. Includes a record review document with votes, six photographs, an article in Iowa Bird Life, an article in American Birds, and eight documentation forms submitted to the committee.
|
Fuller, James L
|
Ross's Gull
|
Red Rock Dam
|
Below the Red Rock Reservoir Dam (Marion County).
|
|
The documentation form by Jim Fuller forms the basis of this record. Other documentation forms by Ann Johnson, Thomas H. Kent, Mark Proescholdt, Randy Pinkston, Peter C. Petersen, Pam Allen, and Raymond Cummins were submitted. Other observers include Pete Wickham, Dick Tetrault, Beth Brown, Tom Johnson, Jim Sinclair, Jim Durbin, Joyce Durbin, Gladys Black, Russ Widner, Ken Lowder, Brian Blevins, Kelly McKay, Reid Allen, Beth Proescholdt, Eugene Armstrong, Eloise Armstrong, and many unidentified observers. | Elimination of similar species: No other small gull has the combination of a pink wash on underparts and head, orange-red legs, very small black bill, nape line, and wedge-shaped tail. | The original documentation form event lasted from 08:35:00/11:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
11
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull near the Ben Butterworth Parkway in Moline, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-12-21
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull near the Ben Butterworth Parkway in Moline in Rock Island County, IL on December 21, 1986. Includes a record review document with votes, summary of review, and six documentations submitted to the committee.
|
Sandvick, Gil
|
Great Black-backed Gull
|
Ben Butterworth Parkway
|
Ben Butterworth Parkway Miss. River - Il. side
|
|
The documentation by Gil Sandvick is the earliest and the one that forms the basis of this record. Other documentations by Thomas H. Kent, James Fuller, Carl Bendorf, Mary Lou Petersen and Peter C. Petersen, and Francis Moore were submitted later. Other observers include Doris Sandvick, Carol Rogers, Tim Dwyer, Al Hahn, Cal Knight, Ann Barker, Betty Hunt, Kelly McKay, Lewis Blevins, Brian Blevins, Corey Blevins, and other unidentified observers. | Elimination of similar species: [...] It was standing with approx eight Herring gulls. "It really stood out." [...] 1. Using Robbins + Peterson books confirming Herring. Great Black-Backed and Lesser Black Gull we eliminated by size to 24"-26". 2. His overall appearance including bill, head and body seemed much larger and fuller than the Herring gulls. | The original documentation form event lasted from 15:35:00/16:05:00 on December 21, 1986 and 10:00:00/11:00:00 on December 23, 1986.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Rare bird documentation form for Pine Siskin at Anderson Township in Mills County, 1982
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1982-05-15
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Pine Siskin at Anderson Township in Mills County, IA on May 15, 1982.
|
Wilson, Barbara L.
|
Pine Siskin
|
Anderson Township
|
Ben Wilson's farm: T-73N, R-40W, Sec. 30, Mills Co., Ia.
|
|
The documentation form by Barbara L. Wilson is the only one submitted and forms the basis of this record. | Elimination of similar species: Uniform brown streaks on face eliminate Purple Finch, as does the thin bill. Sparrows are similar, usually have stouter bill + are less uniformly streaked - they have dark streaks on light underparts, + this one is just streaked all over. | The original documentation form event occurred in the afternoon for at most a minute.
|
Iowa Ornithologists' Union | MS 166
|
35
|
85
|
|
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
|
|
Rare bird documentation form for Great Black-backed Gull at Bettendorf, 1992
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1992-02-03
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Great Black-backed Gull at Bettendorf in Scott County, IA on February 3, 1992.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Great Black-backed Gull
|
Bettendorf
|
Bettendorf, IA
|
Mississippi River
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Dick Tetrault. | Elimination of similar species: Size. All black back and wing. | The original documentation form event lasted from 15:00:00/15:30:00.
|
Iowa Ornithologists' Union | MS 166
|
34
|
38
|
|
Rare bird documentation form for American White Pelican at Bettendorf, 1997
|
Field notes Forms (documents)
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Birds--Identification Ornithology Rare birds
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1997-12-21
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1998-01-04
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Rare birds documentation form
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Rare bird documentation form for a American White Pelican at Bettendorf in Scott County, IA on December 21, 1997.
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McKay, Kelly
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American White Pelican
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Bettendorf
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Bettendorf, IA. shoreline of Missisippi River, Scott County
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The documentation form by Kelly J. McKay is the only one submitted and forms the basis of this record. Other observers include Jim Kingman, Chris Kingman, Keith Blunt, Donna Blair, and Mary Foulk. | Elimination of similar species: All swans - dark torsi and they all lack the lark dark punched bill and black primaries and secondaries. Snow Goose - much smaller and lacks the large pale punched bill and black secondaries. | The original documentation form event lasted from 12:45:00/12:55:00.
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Iowa Ornithologists' Union | MS 166
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32
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16
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Rare bird documentation form for Merlin between Big Creek State Park and Saylorville Reservoir, 1987
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Field notes
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Birds--Identification Ornithology Rare birds
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1987-04-20
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1987-04-22
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Rare birds documentation form
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Rare bird documentation form for a Merlin between Big Creek State Park and Saylorville Reservoir in Polk County, IA on April 20, 1987.
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Proescholdt, Mark
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Merlin
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Big Creek State Park Saylorville Lake
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Between Big Creek State Park and Saylorville Reservoir
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Over wooded hillsides along the Des Moines River
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The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt. | Elimination of similar species: A sharp-shinned Hawk has rounded wings and not pointed like a falcon. A Peregrine is considerably larger and a Kestrel is much smaller. | The original documentation form event lasted from 10:10:00/10:11:00.
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Iowa Ornithologists' Union | MS 166
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33
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32
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Rare bird documentation form for Merlin between Sioux-Rock public access and Oak Grove Park, 1994
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Field notes
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Birds--Identification Ornithology Rare birds
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1994-09-24
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N/A
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Rare birds documentation form
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Rare bird documentation form for a Merlin between Sioux-Rock public access and Oak Grove Park in Sioux County, IA on September 24, 1994.
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Van Dyk, John, 1936-
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Merlin
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Oak Grove State Park Rock River Access
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Between the Sioux-Rock public access area and Oak Grove Park
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The documentation form by John Van Dyk is the only one submitted and forms the basis of this record. | Elimination of similar species: In addition, it would fly every few minutes or so, back and forth between several dead trees, displaying it pointed wings, brownish upperparts, banded tail, and absence of any rufous on its upper parts. | The original documentation form event occurred in the morning.
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Iowa Ornithologists' Union | MS 166
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33
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32
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Rare bird documentation form for Prairie Falcon between Treynor and Carson, 1995
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Field notes
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Birds--Identification Ornithology Rare birds
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1995-03-03
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1995-03-04
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Rare birds documentation form
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Rare bird documentation form for a Prairie Falcon between Treynor and Carson in Pottawattamie County, IA on March 3, 1995.
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Kent, Thomas H. (Thomas Hugh), 1934-
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Prairie Falcon
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Treynor Carson
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between Treynor and Carson on highway 92, Pottawattamie Co., IA
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gently rolling hills; small stream with scattered trees.
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The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Jim Fuller and Dick Tetrault. | Elimination of similar species: The falcon shape was clear to us. The bird was flying directly into a strong southwest wind, but I don't think an accipiter's wing could be that pointed even in a strong wind. The bird was too large and plain to be a kestrel and the flight pattern and behavior were unlike any of the many kestrels seen that day. The light color and open farmland habitat favor Prairie over Peregrine. A Merlin would be smaller and darker. However, I would not have identified this bird as to species with out seeing the underwing pattern. | The original documentation form event occurred at approximately 12:00:00.
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Iowa Ornithologists' Union | MS 166
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33
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35
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