|
Records Committee review for rare bird sighting of California Gull at Runnells Wildlife Area, 1995
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-09-03
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review for a California Gull at Runnells Wildlife Area in Marion County, IA on September 3, 1995. Includes a record review document with votes, two photographs, an article in Iowa Bird Life, and four documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
California Gull
|
Red Rock Wildlife Area
|
1 mi e. of Swan, Marion Co. (Runnells W.A.)
|
pool of shallow water
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Sinclair, Thomas H. Kent, and Jim Fuller were submitted later. | Elimination of similar species: Ring-billed and Herring gulls are the two most likely species of confusion. Ring-billed Gull never shows this much brown in any plumage, has a dark tail band in immature plumages, has a different wing pattern, and is structurally different from California Gull. Herring Gull is more similar in first-basic plumage, but always shows a pale window on the inner primaries, lacks the double dark bar effect in the innerwing, is larger, and very rarely shows a strongly bicolored bill. | The original documentation form event lasted from 10:55:00/12:24:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Hendrickson Marsh, 1984
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-09-15
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Hendrickson Marsh in Story County, IA on September 15, 1984. Includes a record review document with votes, an article in Iowa Bird Life and five documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Hendrickson Marsh Lake
|
Hendrickson Marsh, Story Co.
|
mudflat area in drained section of marsh
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Hank Zaletal, Jim Dinsmore, Mark Proescholdt, and Paul Martsching were submitted later. Other observers include Joe Schaufenbuel. | Elimination of similar species: peeps sp. because of smaller size, lack of gray scaly back, lack of white stripe above eye and lack of black wing tips with white wing stripe. Sanderling was eliminated by smaller size, unscaly back, larger amount of black on wings and lack of necklace on breast. Eliminated from other shore birds by combination of chunky short legged appearance, white wing stripe, necklace on breast and grayish, scaly appearance. | The original documentation form event lasted from 13:00:00/18:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
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.
|
Dinsmore, Stephen J.
|
Ferruginous Hawk
|
Story County
|
Tiegs Marsh, Story County
|
in open cropland near a small marsh
|
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.
|
Iowa Ornithologists' Union | MS 166
|
9
|
1
|
|
Records Committee review for rare bird sighting of Clark's Grebe at Big Creek Lake, 1985
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-10-12
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Clark's Grebe at Big Creek Lake in Polk County, IA on October 12, 1985. Includes a record review document with votes, an article in Iowa Bird Life, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Clark's Grebe
|
Big Creek State Park
|
Big Creek SP, Polk County in middle of large lake
|
in middle of large lake
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Francis Moore were submitted later. | Elimination of similar species: Western Grebe eliminated by the white on the cheek which extended well above the eye. | The original documentation form event lasted from 16:00:00/16:30:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
9
|
|
Records Committee review for rare bird sighting of Red-throated Loon at Saylorville Reservoir, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-11-16
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Red-throated Loon at Saylorville Reservoir in Polk County, IA on November 16, 1988. Includes a record review document and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red-throated Loon
|
Jester Park
|
Jester Park area of Saylorville Reservoir, Polk Co.
|
swimming and diving on large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Eugene Armstrong, Eloise Armstrong, and Mark Proescholdt were submitted later. | Elimination of similar species: The body shape, posture, and black-and-white coloration identified the bird as loon. Although some Common Loons may be quite small. I think this bird was too small for even a very small Common Loon. Otherwise, the slender, upturned bill, the head posture, the contrast between the back and the neck, and the gray neck and white throat eliminated Pacific and Common Loons. | The original documentation form event lasted from 13:46:00/15:43:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
5
|
|
Records Committee review for rare bird sighting of Pomarine Jaeger at Saylorville Reservoir, 1988
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-09-28
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review of two Pomarine Jaegers at Saylorville Reservoir in Polk County, IA on September 28, 1988. Includes a record review document with votes, an article in Iowa Bird Life, and six documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Pomarine Jaeger
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co.-south end of lake
|
resting and feeding on large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Bob Myers, Thomas H. Kent, Peter C. Petersen, Beth Proescholdt, and Mark Proescholdt were submitted later. Other observers include Babs Padelford, Loren Padelford, Jim Sinclair, Bery Engebretsen, Eugene Armstrong, Eloise Armstrong, Jim Dinsmore, Jim Fuller, Brian Blevins, and many unidentified other observers. | Elimination of similar species: The gull-like shape, dark color, and white wing patches eliminate all birds except Jaegers. The large size compared to Ring-billed Gulls, heavy build, large, thick bill, prominent white patches on the upper and under surface on the wings, and the presence of a second white "crescent" on the underwing at the base of the primary coverts eliminate both Parasitic and Long-tailed Jaegers. | The original documentation form event lasted from 12:24:00/14:46:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
15
|
|
Records Committee review for rare bird sighting of Pacific Loon at Saylorville Reservoir, 1989
|
Administrative records Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-10-22
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review for a Pacific Loon at Saylorville Reservoir in Polk County, IA on October 22, 1989. Includes a record review document with votes, a print with three photos and four documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Pacific Loon
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co.-off dam and Cherry Glen Rec. Area
|
large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Bob Myers, Ann Johnson, and Ray Cummins were submitted later. Other observers include Becky Myers, Pam Allen, Reed Allen, Eugene Armstrong, and Eloise Armstrong. | Elimination of similar species: The combination of smaller size, short, straight bill, neck pattern, and contrast between the head and rest of the upperparts eliminates other loons. | The original documentation form event lasted from 07:46:00/11:56:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
7
|
|
Records Committee review for rare bird sighting of a Red-throated Loon at Saylorville Reservoir, 1985
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-11-30
|
1996-08-18
|
Rare birds documentation form
|
Records Committee review for a Red-throated Loon at Saylorville Reservoir in Polk County, IA on November 30, 1985. Includes a record review document with votes, an Iowa Bird Life article, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red-throated Loon
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co.
|
open patch of water on large, frozen reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation form by Robert K. "Bob" Myers were submitted later. | Elimination of similar species: Common Loon eliminated by overall size, bill shape and size, and white spots on back. Arctic Loon eliminated by bill shape and black of crown not reaching eye. | The original documentation form event lasted from 11:00:00/13:00:00 and 13:45:00/14:15:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
5
|
|
Records Committee review for rare bird sighting of Semipalmated Sandpiper at Riverton Wildlife Area, 1988
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-03-27
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review of a Semipalmated Sandpiper at Riverton Wildlife Area in Fremont County, IA on March 27, 1988. Includes a record review document with votes, correspondence about the sighting, entries in an unidentified field guide, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Semipalmated Sandpiper
|
Riverton Wildlife Management Area
|
Riverton W.A., Fremont Co.
|
feeding with other shorebirds on large mudflat area
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Anotther documentation form by Ross Silcock was submitted later. | Elimination of similar species: similar species eliminated above [...] This bird was slightly bigger than a Least and was much chunkier. The bird had dark legs, seen in direct comparison with the dark legs of Baird's Sandpipers and the yellowish legs of the Least Sandpipers. This bird was also still in basic plumage, making it much paler in color than the other peeps. [...] The bill was straight, dark, and much thicker at the base and the tip than the bill of a Baird's or Least sandpiper [sic]. | The original documentation form event lasted from 09:20:00/09:35:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
2
|
|
Records Committee review for rare bird sighting of Pacific Loon at Saylorville Reservoir, 1986
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-11-30
|
1994-02-05
|
Rare birds documentation form
|
Record Committee review for a Pacific Loon at Saylorville Reservoir in Polk County, IA, on November 30, 1986. Includes a record review document with votes, a request of the reconsideration of sight records, an Iowa Bird Life article, a summary of review, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Pacific Loon
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co. (Cherry Glen Recreation Area)
|
large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation forms by Paul Martsching was submitted later. | Elimination of similar species: Common Loon was eliminated by bill size, more rounded forehead, unspeckled back, and by the neck pattern. Red-throated Loon was eliminated by bill shape, lack of speckling on the back, and three-toned neck pattern. | The original documentation form event lasted from 08:43:00/08:45:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
7
|
|
Records Committee review for rare bird sighting of a Pacific Loon at Saylorville Resevoir, 1987
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-11-05
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Pacific Loon at Saylorville Reservoir in Polk County, IA on November 5, 1987. Includes a record review document with votes, correspondence with the California Bird Records Committee between from Don Roberson and Ronald E. Goetz to Thomas H. Kent, and two documentation forms.
|
Dinsmore, Stephen J.
|
Pacific Loon
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co.-off Jester Park
|
swimming on large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation forms by Mark Proescholdt was submitted later. Other observers were Beth Proescholdt, Dennis Thompson, and Berry Engebretson. | Elimination of similar species: The slimmer, shorter bill, rounded head, and sharp contrast between the neck and the back eliminates Common and Yellow-billed loons. The shorter, straight bill and unmarked back eliminates Red-throated Loon. | The original documentation event lasted from 11:45:00/12:30:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
7
|
|
Records Committee review for rare bird sighting of Whimbrel at Hendrickson Marsh, 1984
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-05-12
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Whimbrel at Hendrickson Marsh in Story County, IA on May 12, 1984. Includes a record review document with votes, a summary of review, an article in Iowa Bird Life, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Whimbrel
|
Hendrickson Marsh Wildlife Management Area
|
NW corner of Hendrickson Marsh, Story Co.
|
drained area of marsh adjacent to a grassy field
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Paul Martsching was submitted later. Other observers include Gordon Brown and Mark Dixon. | Elimination of similar species: Separated from Godwits and Willet by the long downward curved bill and the distinct head pattern. Separated from Ibis' by the strongly marked head and the mottled brown color of bird. Separated from Long-billed Curlew by much shorter bill and the strongly marked head. | The original documentation form event lasted from 12:30:00/14:00:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
23
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Saylorville Reservoir, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-11-30
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Saylorville Reservoir in Polk County, IA on November 30, 1986. Includes a record review document with votes, a summary of the review, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Great Black-backed Gull
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co. (near visitors center)
|
large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Paul Martsching was submitted later. | Elimination of similar species: Second winter Herring Gull eliminated by size, bill size, lack of a gray mantle, lack of streaking on the head and underparts, lack of a window on the upperwing, by the all white tail with a dark band at the tip, and by the very dark underside of the primaries. Second winter Lesser Black-backed Gull eliminated by smaller size, browner uppertail, and heavily streaked head and underparts. | The original documentation form event lasted from approximately 16:00:00/16:15:00 on November 30, 1986 and 15:55:00/16:08:00 on December 1, 1986.
|
Iowa Ornithologists' Union | MS 166
|
10
|
21
|
|
Records Committee review for rare bird sighting of Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir, 1989
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-02
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review for a Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on November 2, 1989. Includes a record review document with votes, an article in Iowa Bird Life, photocopies of four photographs, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Black-headed Gull
|
Cherry Glen Recreation Area
|
Saylorville Reservoir, Polk Co.-off Cherry Glen Rec. Area
|
large reservoir
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by B.J. Rose was submitted later. Other observers include Doug Rose, Roger Rose, and Ken Lowder. | Elimination of similar species: Because of the fairly small size and conspicuous dark spot behind each eye, the bird must have been a Bonaparte's, Little, Common Black-headed, or Ross' gull, or a kittiwake. Separation from Bonaparte's Gull is discussed above. Little Gull eliminated by its smaller size, dark bill, lack of any black color on the upperwing, and uniformly dark underside to the flight feathers. Ross' Gull eliminated by tail shape, bill size and color, and darker underwing. Both kittiwakes eliminated by bill color, lighter mantle color, and differences in wing pattern. | The original documentation form event lasted from 16:17:00/16:42:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
21
|
|
Records Committee review for rare bird sighting of Little Gull near Jester Park in Saylorville Reservoir, 1988
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-10-27
|
1997-10-03
|
Rare birds documentation form
|
Records Committee review for a Little Gull near Jester Park in Saylorville Reservoir in Polk County, IA on October 27, 1988. Includes a record review document with votes, an article in Iowa Bird Life, correspondence requesting reevaluation of record, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Little Gull
|
Jester Park
|
Saylorville Reservoir, Polk Co.-near Jester Park
|
flying and feeding over reservoir with other gulls
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Ann Johnson was submitted later. | Elimination of similar species: The small size, black "W" across the back of the wings, lack of a lighter "window" on the inner primaries, and slightly blunter wingtips eliminates all other gulls. | The original documentation form event lasted from 16:22:00/18:05:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
20
|
|
Records Committee review for rare bird sighting of Pacific Loon at Saylorville Reservoir, 1986
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc Wildlife conservation
|
1986-11-01
|
1996-04-24
|
Rare birds documentation form
|
Records Committee review for a Pacific Loon at Saylorville Reservoir in Polk County, IA on November 1, 1986. Includes a record review document with votes, revotes on sighting, correspondence regarding sighting from Ronald E. Goetz to Thomas H. Kent, article from Iowa Bird Life, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Pacific Loon
|
Saylorville Lake
|
Prairie Flower Recreation Area, Saylorville Reservoir
|
large body of water
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. | Elimination of similar species: Common Loon eliminated by the more rounded forehead, the smaller, darker bill, the paler nape and crown, the gray necklace on the throat, and by the overall smaller size(a small Common Loon should still show the features of a normal Common Loon). Red-throated Loon was separated by the straight (not upturned) bill, the dark, unspeckled [sic] back, and the gray necklace. | The original documentation form event lasted from 15:00:00/15:20:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
7
|
|
Records Committee review for rare bird sighting of Red-throated Loon at Saylorville Reservoir, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-12-01
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Red-throated Loon at Saylorville Reservoir in Polk County, IA on December 1, 1986. Includes a record review document, a summary of the review of the committee, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Red-throated Loon
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co. (Cherry Glen Recreation Area)
|
swimming in open water off rock jetty
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. | Elimination of similar species: Common Loon eliminated by smaller size, head posture, shorter, upturned bill, speckling on back, more rounded forehead, and sharp contrast between throat and back of neck. Pacific Loon eliminated by bill shape, head posture, speckling on back, two-toned (not three-toned) neck pattern, lack of chinstrap (not definitive, but helpful), and crown color not including the eye (should include the eye on Pacific Loon). | The original documentation form event lasted from 15:26:00/15:50:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
5
|
|
Records Committee review for rare bird sighting of Sabine's Gull at Saylorville Reservoir, 1995
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-09-14
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review for one to two Sabine's Gull at Saylorville Reservoir in Polk County, IA on September 14, 1995. Includes a record review document with votes, an Iowa Bird Life article, and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Sabine's Gull
|
Saylorville Lake
|
Saylorville Res., Polk Co.
|
large lake
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Thomas H. Kent and Chris Edwards were submitted. Other observers include Tim Schantz, Chris Caster, James Huntington, and many unidentified other observers. | Elimination of similar species: The distinctive wing pattern eliminates other gull species, especially Black-legged Kittiwake. | The original documentation form event lasted from 09:40:00/10:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
9
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Saylorville Dam, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-11-29
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Saylorville Dam in Polk County, IA on November 29, 1986. Includes a record review document with votes, a summary of review, and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Saylorville Dam
|
Saylorville Reservoir, Polk Co.
|
sitting on ice above dam
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Tanya Bray and Barbara Wilson were submitted. Other observers include Peter Wickham, Mark Brogie, and Bery Engebretsen. | Elimination of similar species: Great Black-backed Gull was eliminated by the smaller size, contrast between the wingtips and the rest of the wing, and by the heavy streaking on the head(head should be mostly white on a Great Black-backed Gull). California Gull was eliminated by the darker mantle, darker underwing and dark carpal bar, lack of a dark spot on the bill, and by the dark smudge at the base of the bill(this is characteristic of 3rd summer Lesser Black-backed Gulls and is never present on California Gulls). | The original documentation form event lasted from 10:08:00/12:10:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Thayer's Gull near Saylorville Reservoir Dam and Oak Grove Beach, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-11-23
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for seven or more Thayer's Gulls near Saylorville Reservoir Dam and Oak Grove Beach in Polk County, IA on November 23, 1986. Includes a record review document with votes, a summary of the review, and seven documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Thayer's Gull
|
Saylorville Dam Oak Grove Recreation Area
|
Saylorville Reservoir, Polk Co.(Oak Grove Beach and near dam)
|
seen resting on beach and flying over water near dam
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Steve Dinsmore were submitted. Other observers include Paul Martsching, Bob Myers, Beth Proescholdt, Mark Proescholdt, and many unidentified other observers. | Elimination of similar species: The darker body plumage and dark tail band eliminate Iceland Gull (Kumlien's form). The smaller size, smaller, more delicate bill, more rounded head, silvery white underwing pattern, more uniform body color, and more uniform upperwing pattern eliminate first winter Herring Gull. | The original documentation form event occurred at various times.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
|
Records Committee review for rare bird sighting for Rock Wren at Cherry Glen Recreation Area at Saylorville Reservoir, 1988
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-11-08
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Rock Wren at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on November 8, 1988. Includes a record review document with votes, an article in Iowa Bird Life, and seven documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Rock Wren
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Cherry Glen Recreation Area
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Saylorville Reservoir, Polk Co.-Cherry Glen Rec. Area
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hopping around in rock rip-rap along lakeshore
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The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Michael and Diane Porter, Ray Cummins, Robert Cecil, Jim Fuller, Ann Johnson, and Mark Proescholdt were submitted. Other observers include Thomas Kent, John Cecil, Tom Johnson, Beth Proescholdt, Francis Moore, Beth Brown, Cal or Bernie Knight, Eugene Armstrong, Eloise Armstrong, and many unidentified other observers. | Elimination of similar species: The size, behavior, gray upperparts and buffy tail, light eyeline, and call eliminate other wrens. | The original documentation form event lasted from 15:08:00/15:20:00 on November 8, 1988.
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Iowa Ornithologists' Union | MS 166
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13
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1
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Records Committee review for rare bird sighting of Mew Gull at Red Rock Reservoir Dam, 1994
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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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1994-12-11
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1996-04-25
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Rare birds documentation form
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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.
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Dinsmore, Stephen J.
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Mew Gull
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Red Rock Dam
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below Red Rock Reservoir dam, Marion Co., IA
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spillway
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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.
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Iowa Ornithologists' Union | MS 166
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10
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23
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Records Committee review for rare bird sighting of Arctic Tern at Sandpiper Beach at Saylorville Reservoir, 1999
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1999-08-19
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2000-11-28
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Rare birds documentation form
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Records Committee review for an Arctic Tern at Sandpiper Beach at Saylorville Reservoir in Polk County, IA on August 19, 1999. Includes a record review document with votes, and three documentation forms submitted to the committee.
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Dinsmore, Stephen J.
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Arctic Tern
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Sandpiper Recreation Area
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Saylorville Reservoir, Polk County, Iowa
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large reservoir
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The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Jim Dinsmore and Tom Kent were submitted. Other observers include Jim Sinclair and Dick Tetrault. | Elimination of similar species: The combination of smaller size, bill size, leg length, and wing pattern eliminates other Sterna, especially Common and Forster's Terns. | The original documentation form event lasted from 18:15:00/19:40:00.
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Iowa Ornithologists' Union | MS 166
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12
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2
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Records Committee review for rare bird sighting of Arctic Tern at Sandpiper Beach at Saylorville Reservoir, 1999
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Administrative records Field notes Photographs
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Bird watching Ornithology Ornithology--Societies, etc
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1999-08-18
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2000-11-28
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Rare birds documentation form
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Records Committee review for an Arctic Tern at Sandpiper Beach at Saylorville Reservoir in Polk County, IA on August 18, 1999. Includes a record review document with votes, four photographs, and three documentation forms submitted to the committee.
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Dinsmore, Stephen J.
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Arctic Tern
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Sandpiper Recreation Area
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Saylorville Reservoir, Polk County, Iowa
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large reservoir
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The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by James J. Dinsmore and Ann Johnson were submitted. | Elimination of similar species: The combination of size, bill shape and color, white cheek, dark gray underparts, leg length, and wing pattern eliminate other species of Sterna. | The original documentation form event lasted from 17:30:00/17:55:00.
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Iowa Ornithologists' Union | MS 166
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12
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2
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Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Reservoir Dam, 1987
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1987-12-02
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1993-09-07
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Rare birds documentation form
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Records Committee review for two or more Thayer's Gulls at Saylorville Reservoir Dam in Polk County, IA on December 2, 1987. Includes a record review document with votes and five documentation forms submitted to the committee.
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Dinsmore, Stephen J.
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Thayer's Gull
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Saylorville Dam
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Saylorville Reservoir, Polk Co.
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sitting on ice with other gulls
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The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Francis L. Moore, Steve Dinsmore, and Mark Proescholdt were submitted. Other observers include Andy Fix, Beth Proescholdt, Eugene Armstrong, Eloise Armstrong, Bob Cecil, Bery Engebretsen, Jim Sinclair, and many unidentified observers. | Elimination of similar species: The overall dark color of the bird and the lack of paler wingtips eliminates first-winter Iceland Gull. The translucent flight feathers, uniform body color, lack of a "window" on the upperwing, smaller, thinner bill, rounder head, dark smudge around the eye, and smaller size eliminates first-winter Herring Gull. The uniform body color, lack of a dark tail band, and translucent flight feathers eliminates first-winter Lesser Black-backed Gull. | The original documentation form event lasted from 08:00:00/08:05:00.
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Iowa Ornithologists' Union | MS 166
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11
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3
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