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Rare bird documentation form for Swainson's Hawk at Bayard, 1980
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Field notes
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Birds--Identification Ornithology Rare birds
|
1980-09-21
|
1980-09-28
|
Rare birds documentation form
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Rare bird documentation form for three Swainson's Hawks at Bayard in Guthrie County, IA on September 21, 1980.
|
Newlon, Michael C.
|
Swainson's Hawk
|
Bayard
|
near Bayard, Guthrie Co., IA
|
farmland
|
The documentation form by Michael C. Newlon is the only one submitted and forms the basis of this record. Other observers include Tom Shires, Carol Newlon, and Thomas Kent. | Elimination of similar species: build, combination of white underparts + wing - linings plus dark flight -feathers eliminate other possible buteos - redtail, roughleg, broadwing, ferruginous, red-shoulder. | The original documentation form event occurred around 11:30:00/11:40:00 approximately.
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28
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Rare bird documentation form for Swainson's Hawk at Bronson, 1984
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1984-05-04
|
1984-05-08
|
Rare birds documentation form
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Rare bird documentation form for a Swainson's Hawk at Bronson in Woodbury County, IA on May 4, 1984.
|
Holloway, Jack A.
|
Swainson's Hawk
|
Bronson
|
Woodbury County, Bronson, Iowa
|
Open pastures and barefields
|
The documentation form by Jack A. Holloway III is the only one submitted and forms the basis of this record. | Elimination of similar species: Harlan's: Harlan's has more white on the tail and on the underside of wing. Harlan's wings are not as long + does not have the distinct habit of flying with the wings at such a noticeable angle. | The original documentation form event lasted from 10:05:00/10:20:00.
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28
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Rare bird documentation form for Swainson's Hawk at Hartman Reserve, 1977
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1977-04-20
|
1977-12-01
|
Rare birds documentation form
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Rare bird documentation form for three Swainson's Hawks at Hartman Reserve in Cedar Falls in Black Hawk County, IA on April 20, 1977.
|
Stone, Tom
|
Swainson's Hawk
|
Hartman Reserve Nature Center
|
Hartman Reserve, Cedar Falls, (Nesting)
|
Cedar River flood plain area, lowland forest
|
The documentation form by Thomas Stone is the only one submitted and forms the basis of this record. Other observers include Russ Hays, Dean Roosa, Mary Duritsa, and Antoinette Camarata. | Elimination of similar species: Red Tailed Hawk, Rough legged Hawk. | The original documentation form event lasted from 07:00:00/20:00:00.
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Iowa Ornithologists' Union | MS 166
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28
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Rare bird documentation form for Swainson's Hawk at Hawkeye Wildlife Area, 1992
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1992-04-04
|
1992-04-05
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Rare birds documentation form
|
Rare bird documentation form for a Swainson's Hawk at Round Pond in Hawkeye Wildlife Area in Johnson County, IA on April 4, 1992.
|
Scheib, James
|
Swainson's Hawk
|
Hawkeye Wildlife Management Area
|
Just east & south of Round Pond in Hawkeye WIldlife Area, Johnson Co.
|
Over trees lining a grassy field on south side of Swan Lake Road.
|
The documentation form by James Scheib is the only one submitted and forms the basis of this record. Other observers include Sharon Scheib. | Elimination of similar species: I assumed a Red-tailed hawk until I put my binoculars on it and saw that it lacked the patagial marks of a RTH and had a dark mottled pattern underneath including the breast, thus really getting my attention. I next assumed a Rough-legged Hawk and looked to the wing pattern, but the wrist markings were dark commas, not the large carpal patch in a RLH. See above for RTH & RLH. From the first I never considered it to be a Red-shouldered Hawk because of the highly contrasting patterning of the underside as opposed to the duller, finer underside of the RSH. The size was also that of a larger hawk. | The original documentation form event lasted from 09:00:00/09:02:00.
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Iowa Ornithologists' Union | MS 166
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28
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Rare bird documentation form for Swainson's Hawk at Osceola County, 1978
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1978-05-16
|
N/A
|
Rare birds documentation form
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Rare bird documentation form for two Swainson's Hawks at Osceola County, IA on May 16, 1978.
|
Bierman, Dick
|
Swainson's Hawk
|
Osceola County
|
Osceola County
|
open farm country, nest in a farm grove
|
The documentation form by Dick Bierman is the only one submitted and forms the basis of this record. Other observers include Dean Roosa and Steve Duecker. | Elimination of similar species: Red Tail, these birds had no red tail. | The original documentation form event lasted all day.
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Iowa Ornithologists' Union | MS 166
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28
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Rare bird documentation form for Swainson's Hawk at Union Slough National Wildlife Refuge, 1988
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1988-03-27
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Swainson's Hawk at Union Slough National Wildlife Refuge in Kossuth County, IA on March 27, 1988.
|
Kenne, Matthew C.
|
Swainson's Hawk
|
Union Slough National Wildlife Refuge
|
1 mi E of Union Slough N.W.R., Kossuth Co., Ia. south of Titonka Blacktop
|
Pasture dotted with trees, stream in bottom.
|
The documentation form by Matthew Kenne is the only one submitted and forms the basis of this record. | Elimination of similar species: Other dark buteos have paler areas underneath, but this bird was as dark under wing as chest, belly, and back. | The original documentation form event lasted from 10:30:00/10:35:00.
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Iowa Ornithologists' Union | MS 166
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28
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Rare bird documentation form for Swainson's Hawk east of Sweet Marsh in 1977
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1977-08-06
|
1977-12-01
|
Manuscript, graphic, and printed material
|
Rare bird documentation form for two separate sightings of Swainson's Hawks east of Sweet Marsh in Bremer County, IA. The first sighting was for two hawks on August 6, 1977. The second sighting was for two hawks on September 17, 1977.
|
Stone, Tom
|
Swainson's Hawk
|
Sweet Marsh
|
|
|
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28
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Rare bird documentation form for Swainson's Hawk near Lake Mills and Rice Lake, 1978
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1978-06-03
|
1978-06-12
|
Rare birds documentation form
|
Rare bird documentation form for a Swainson's Hawk near Lake Mills and Rice Lake in Winnebago County, IA on June 3, 1978.
|
Dinsmore, James J.
|
Swainson's Hawk
|
Lake Mills Rice Lake
|
Winnebago County, 1 1/2 miles SE of Lake Mills (1 mile N of Rice Lake)
|
mixed oak savannah with farmland. Bird flew from area of oak woodlot out over farmland and circled over me
|
The documentation form by James Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: red tail-no belly band, no red on tail, shape seemed slimmer than most red-tails. roughleg-no white on rump, no tail bands. Broadwing and red-shoulder- too big and no tail bands. | The original documentation form event lasted from 13:55:00/14:00:00.
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28
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Rare bird documentation form for Swainson's Hawk near Melvin, 1978
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1978-06-09
|
1978-06-12
|
Rare birds documentation form
|
Rare bird documentation form for two Swainson's Hawks near Melvin in Osceola County, IA on June 9, 1978.
|
Dinsmore, James J.
|
Swainson's Hawk
|
Melvin
|
along highway 59, 6 miles south of intersection with highway 9, or 4 miles north of Melvin, in Osceola County
|
Open farmland with nearly all row crops. Nest was in a small grove of cottonwoods (large trees) around a farm. Trees had no underbrush and was almost parklike
|
The documentation form by James Dinsmore is the only one submitted and forms the basis of this record. Other observers include Tom Nigus. | Elimination of similar species: Redtail-no red, no belly band. Roughleg-no bands on tail. Broadwing & red-shouldered - size and no bands on tail. | The original documentation form event lasted from 15:30:00/15:40:00.
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Iowa Ornithologists' Union | MS 166
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28
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Rare bird documentation form for Swainson's Thrush at Des Moines, 1996
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1996-11-14
|
1996-11-15
|
Rare birds documentation form
|
Rare bird documentation form for a Swainson's Thrush at Des Moines in Polk County, IA on November 14, 1996.
|
Cecil, Robert I.
|
Swainson's Thrush
|
Des Moines
|
1315 41st St. Des Moines, IA
|
Urban Residential
|
The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. | Elimination of similar species: The uniformity of color on the bird's upper parts in conjunction with the conspicuous eyering [sic] eliminates all other thrushes. | The original documentation form event lasted from 08:15:00/08:18:00.
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Iowa Ornithologists' Union | MS 166
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8
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Rare bird documentation form for Swainson's Thrush at Laurens, 1985
|
Field notes
|
Bird banding Birds--Identification Ornithology Rare birds
|
1985-11-11
|
1985-11-14
|
Rare birds documentation form
|
Rare bird documentation form for a Swainson's Thrush at Laurens in Pocahontas County, IA on November 11, 1985.
|
Carlson, Judith
|
Swainson's Thrush
|
Laurens
|
318 W. Garfield - Laurens
|
Town yard - many high bush Canberry [sic] bushes
|
The documentation form by Judith Carlson is the only one submitted and forms the basis of this record. Other observers include Ron Harms. | The original documentation form event lasted from 15:00:00/16:30:00.
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Iowa Ornithologists' Union | MS 166
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35
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8
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Rare bird documentation form for Swainson's Thrush at Sioux Center, 1997
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1997-06-08
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Swainson's Thrush at Sioux Center in Sioux County, IA on June 8 ,1997.
|
Van Dyk, John, 1936-
|
Swainson's Thrush
|
Sioux Center
|
Sioux Center
|
|
The documentation form by John Van Dyk is the only one submitted and forms the basis of this record. Other observers include Wendy and Susan Van Dyk. | Elimination of similar species: Gray-cheeked Thrush: The eye-ring and buff on face and upper breast were unmistakable. Veery: The spots on the breast were bold and clear, and the upper parts showed no tan or reddish hue. Wood Thrush: The upperparts were clear -- no heavy round spots like the Wood thrush, and no reddish upperparts. Hermit Thrush: No reddish tail, and no sign of the characteristic tail-wagging. | The original documentation form event occurred in the morning.
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Iowa Ornithologists' Union | MS 166
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35
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8
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Rare bird documentation form for Swamp Sparrow at Sweet Marsh, unknown year
|
Field notes
|
Birds--Behavior Birds--Identification Ornithology Rare birds
|
N/A
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Swamp Sparrow at Sweet Marsh in Bremer County, IA on December 18, unknown year.
|
Stone, Tom
|
Swamp Sparrow
|
Sweet Marsh
|
Sweet Marsh
|
swamp grass along dike
|
The documentation form by Tom Stone is the only one submitted and forms the basis of this record. | Elimination of similar species: Too bulky for Chipping Sparrow, Field + Tree Sparrow have wing bars | The original documentation form event lasted from 11:30:00/11:40:00.
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Iowa Ornithologists' Union | MS 166
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35
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62
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Rare bird documentation form for Swan species at Silver Lake, 1994
|
Field notes
|
Birds--Identification Anseriformes | Ducks, Geese, and Swans Ornithology Rare birds
|
1994-11-19
|
1994-12-03
|
Rare birds documentation form
|
Rare bird documentation form for a Swan species at Silver Lake in Palo Alto County, IA on November 19, 1994.
|
Schoenewe, Lee A.
|
Swans
|
Silver Lake
|
Silver Lake, Palo Alto Co
|
Open Water
|
The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. | The original documentation form event lasted from 16:00:00/16:30:00 on November 19 and 14:30:00/15:15:00 on November 20.
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1
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Rare bird documentation form for Thayer's Gull at Black Hawk Lake, 1996
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1996-02-11
|
1996-02-13
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Black Hawk Lake in Sac County, IA on February 11, 1996.
|
Thelen, Ed
|
Thayer's Gull
|
Black Hawk Lake
|
Black Hawk Lake Sac County
|
Natural Lake - near open water from aerator
|
The documentation form by Ed Thelen is the only one submitted and forms the basis of this record. Other observers include Rob Thelen and Peter Ernzen. | Elimination of similar species: Herring Gull has dark lesser coverts and dark feathers under the wing tips. More distinct tail band + larger bill. | The original documentation form event lasted from 09:30:00/10:00:00.
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35
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Rare bird documentation form for Thayer's Gull at Cone Marsh, 1983
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1983-02-27
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Cone Marsh in Louisa County, IA on February 27, 1983.
|
Newlon, Michael C.
|
Thayer's Gull
|
Cone Marsh Wildlife Management Area
|
NE side Cone Marsh Louisa Co IA
|
freshwater marsh with considerable open water
|
The documentation form by Michael Newlon is the only one submitted and forms the basis of this record. Other observers include Carol S. Newlon. | Elimination of similar species: proportions, uniformly pale primaries would rule out herring; size/build rules out imm. glaucous. Bill much less heavy than imm. glaucous-winged. Remaining question is whether this bird is (over) a Thayer's Gull or a Kumlien's gull, presently considered separate species but widely suspected of being conspecific. Thayer's is extremely variable, and the limits of its variability are not well known, especially for imm. plumages. [Dwight says of his series of ad. thayeri, 'no two are alike'. It seems probable that there is clinal variation from west to east (thayeri - kumliesi [sic] - nominate glaucoides) and even possible that thayeri interbreeds with argenlatus at the western end of its range.] In addition several plumage descriptions in the literature may be assigned to birds of [illegible] age. Be that as it may: L. glaucoides glaucoides is supposed to have pale warm-brown primaries as a 1-W & paler, nearly whitish areas as a 2-W (though photos in grant's [sic] book show one 2-W with pale-brown primaries concolor with coverts). L. glaucoides kumlieni (in Dwight's plates) is assigned v. pale primaries as a 1-W, with slightly darker outer webs; would look uniform pale grey at any distance. His 2-W has darker primaries, again with slightly darker outer webs [I suspect these assignments should be reversed.] L. thayeri in published description is supposed to have darker primaries still, though not so dark as those of imm. Herring gulls, and lacking contrast with mantle. However some west coast thayeri-type gulls are very pale - though their back color is grey-brown rather than the warmer pale tan of L. glaucoides. (It is possible that these are really kumlieni but little data exists.) It is the similarity of the Cone Marsh Bird to one I photographed in Cal. that convinced me to classify it as thayeri - though kumleni cannot be unequivocally ruled out | The original documentation form event lasted from 11:10:00/12:30:00.
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35
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Rare bird documentation form for Thayer's Gull at Iowa City, 1993
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1993-01-19
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Iowa City in Johnson County, IA on January 19, 1993.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Iowa City
|
Iowa City, Johnson Co., Iowa.
|
partially open Iowa River
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Jim Fuller. | Elimination of similar species: I distinguished this bird from Herring Gull based on smaller body size, smaller head and bill, shorter wing span, uniform light tan coloration, medium brown (not black) outer primaries, translucent primaries from below, and medium brown tail band. I distinguished it from Iceland Gull by the brown outer primaries, relatively more tan coloration, and medium brown tail band. | The original documentation form event lasted from 11:40:00/11:50:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Island View at Rathbun Reservoir, 1986
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1986-12-20
|
1986-12-23
|
Rare birds documentation form
|
Rare bird documentation form for three Thayer's Gulls at Island View Park at Rathbun Reservoir in Appanoose County, IA on December 20, 1986.
|
Dinsmore, Stephen J.
|
Thayer's Gull
|
Island View Park
|
Rathbun Reservoir, Appanoose Co. (Island View East and West Areas)
|
sitting on ice and feeding on open water 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 Ray Cummins. | Elimination of similar species: The first-year birds were separated from first-year Iceland Gull by the distinct tail band and the darker primaries and from first-year Herring Gull by head shape, bill size, more uniform body color, and the silvery-white underwing. The adult bird was separated from an adult Iceland Gull by size, bill shape, and more black (still not too much, though) in the wingtips and from an adult Herring Gull by head shape, bill size, and paler wingtips. | The original documentation form event lasted from 10:05:00/10:30:00 and 13:30:00/13:54:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock + Dam 15, 1992
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1992-01-17
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on January 17, 1992.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Lock and Dam 15
|
Lock + Dam #15, Davenport, 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 Jim Fuller and others. | Elimination of similar species: Herring Gull-see above. | The original documentation form event lasted from 15:30:00/15:35:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock and Dam 14, 1995
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1995-01-03
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 14 in Scott County, IA on January 3, 1995.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Lock and Dam 14
|
Lock and Dam 14, Scott Co., IA
|
Mississippi River dam
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. | Elimination of similar species: I looked at many variable first-winter Herring Gulls today. All had more dark on wing tip and darker tail band. This bird was easy to pick out over and over again. | The original documentation form event lasted from 12:00:00/12:20:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock and Dam 15 in Davenport, 1992
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1992-01-17
|
1992-01-19
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on January 17, 1992.
|
Cecil, Robert I.
|
Thayer's Gull
|
Lock and Dam 15
|
Lock and Dam 15, Davenport, Iowa. Rusty Pelican Restaurant
|
River
|
The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. | Elimination of similar species: See above discussion. [...] The wingtip pattern is what caught my attention. There was much less darkening to the outer primaries than on accompanying gulls. [...] When viewed fro [sic] underneath, the wingtips of the subject bird were white to the tips, with the exception of very narrow black tips at the tips of the primaries. This was very different from the adult Herring/Ring-bills which had substantial black towards the end of the underwings. | The original documentation form event lasted from 10:30:00/10:45:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock and Dam 15 in Davenport, 1996
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1996-11-14
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on November 14, 1996.
|
Fuller, James L
|
Thayer's Gull
|
Lock and Dam 15
|
Lock & Dam #15 of Mississippi River, Davenport (Scott County)
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: The amount of black and white in the outer primary tips (both upper and underwing) is much less than would be expected in Ring-billed or Herring. Ring-billed is smaller with a dark ring on bill of adult. Although a few Herrings have somewhat bright pink legs, most are a dull pink. An Iceland adult should have a lighter mantle and upperwing, and less gray (not black) on the outer primary tips. | The original documentation form event lasted from 13:50:00/14:15:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock and Dam 15, 1995
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1995-12-17
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 15 in Scott County, IA on December 17, 1995.
|
Petersen, Peter C.
|
Thayer's Gull
|
Lock and Dam 15
|
Lock + Dam 15, seen from Iowa walking near Il. Shore mostly
|
Open river
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Walter Zuurdeeg, Mary Lou Petersen, and Kelly McKay. | Elimination of similar species: Herring Gull - heavier bill, very dark primary tips, no windows, tail darker with uneven white edge, secondaries dark from above, underwing much darker. Iceland Gull would show much lighter plumage overall, especially tail + primary tips. | The original documentation form event lasted from 12:05:00/12:10:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Lock and Dam 19, 1990
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1990-11-06
|
1990-11-09
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Lock and Dam 19 in Keokuk in Lee County, IA on November 6, 1990.
|
Cecil, Robert I.
|
Thayer's Gull
|
Lock Number 19
|
Behind Lock and Dam 19 at Keokuk, Lee County, Iowa
|
River
|
The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. | Elimination of similar species: Too small, to [sic] uniform in color for Herring. Slight darkening at wingtips eliminates Iceland. | The original documentation form event lasted from 07:45:00/08:00:00 and 13:30:00/13:40:00.
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Iowa Ornithologists' Union | MS 166
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35
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Rare bird documentation form for Thayer's Gull at Red Rock Dam, 1993
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1993-11-13
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 13, 1993.
|
Pinkston, Randall, 1956-
|
Thayer's Gull
|
Red Rock Dam
|
Lake Red Rock dam, Marion County, Iowa
|
|
The documentation form by Randall Pinkston is the only one submitted and forms the basis of this record. Other observers include Jim Fuller. | Elimination of similar species: Compared with first-winter Herring Gull above. Pale Thayer's may be confused with same-aged Iceland Gull, but Iceland typically much paler than this individual. Iceland should also show pale, mottled tertials and tail which are concolor with the upperparts. This bird's tertials and tail were unpatterned (except at the edges of the tertials) and darker than the remainder of the upperparts. Iceland's folded primaries are paler than the remainder of the mantle, not darker as in this bird. Slaty-backed, Glaucous-winged, and Glaucous-winged X Western hybrid Gulls all larger, have more massive bills, less likely in Iowa. | The original documentation form event lasted from 10:15:00/10:40:00.
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Iowa Ornithologists' Union | MS 166
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35
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