|
Records Committee review for rare bird sighting for Wood Thrush at Eden Valley Refuge, 1985
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-12-18
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Wood Thrush at Eden Valley Refuge in Clinton County, IA on December 18, 1985. Includes a record review document with votes and a documentation form submitted to the committee.
|
Kaufman, Sharon
|
Wood Thrush
|
Eden Valley County Refuge
|
West Valley at Eden Valley Refuge (Lost Nation CBC)
|
Shrubs at hardwood timber edge
|
The documentation form by Sharon Kaufman is the only one submitted and forms the basis of this record. Another observer was Jack Wohlstadter. | Elimination of similar species: Hermit and Grey Cheeked Thrush. This bird had more conspicuous eye, larger and more numerous breast spots. | The original documentation form event occurred around 11:00:00.
|
Iowa Ornithologists' Union | MS 166
|
13
|
8
|
|
Rare bird documentation form for Rehead at Willow Slough in 1978
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1978-06-30
|
1978-07-13
|
Manuscript, graphic, and printed material
|
Rare bird documentation form for seven Redhead at Willow Slough in Mills County, IA on June 30, 1978.
|
Wilson, Barbara L.
|
Redhead
|
Willow Slough State Game Management Area
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
33
|
8
|
|
Rare bird documentation form for Red-throated Loon at Saylorville Lake, 1999
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1999-11-06
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Clear Lake in Polk County, IA on November 6, 1999.
|
Engebretsen, Bery
|
Red-throated Loon
|
Saylorville Lake
|
Saylorville Lake
|
above dam
|
The documentation form by Bery Engebretsen is the only one submitted and forms the basis of this record. Other observers include Dennis Thompson and Jim Dinsmore. | Elimination of similar species: Small loon, small head slightly upturned beak and head. White visible on flanks. Faint fleck on dark back at tips of feathers. No chin strap, but from front had faint inverted V. Head, neck brownish/gray. Darker on back of neck, top of hood, much lighter chin, front of neck, sides of neck. | The original documentation form event lasted from 07:30:00/08:30:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Saylorville Reservoir, 1999
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1999-11-07
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for two Red-throated Loons at Saylorville Reservoir in Polk County, IA on November 7, 1999.
|
Dinsmore, James J.
|
Red-throated Loon
|
Saylorville Dam
|
Saylorville Reservoir, off of west end of dam
|
freshwater lake
|
The documentation form by Jim Dinsmore is the only one submitted and forms the basis of this record. Other observers include Bery Engebretsen and Dennis Thompson. | Elimination of similar species: I spent a long time puzzling over these birds, both in the field and later when I had several references to consult. None of the guides I looked at showed a bird that looked like these. Common (a small one): removed on the basis of size (birds too small for Common Loon), the thinner and bicolored bill, and the color pattern on the neck. At this time of year, all of the Common Loons I have seen (and saw on Saylorville that day) were distinctly white on the front of the neck with some partial bands of brown extending back in to the white. Pacific Loon: Eliminated on behavior (head posture), lack of a distinct dark/white line along the side of the neck, lack of chin straps across neck, and presence of brown on front of neck. Also the gray/brown contrast between neck and back would point away from Pacific but not eliminate it. Red-throated Loon: This is what I first thought the birds were but as I viewed them, I convinced myself several times that they were Pacific Loons. However, the combination of characters listed above seem to eliminate the other two possible species and also are positive characters for the Red-throated Loon. One character that puzzled me was the size of the bill. At least some of the guides (Advanced Birding esp) show the Red-throated Loon as having a tiny bill, much smaller than on this bird but those illustrations do not match those in other guides which emphasize more the shape of the bill than the size. | The original documentation form event lasted from 07:45:00/08:45:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Red Rock Reservoir, 1999
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1999-11-03
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Red Rock Reservoir in Marion County, IA on November 3, 1999.
|
Fuller, James L
|
Red-throated Loon
|
Whitebreast Recreation Area
|
Red Rock Reservoir (Marion County) Off Whitebreast Point.
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. Other observer includes Tom Kent. | Elimination of similar species: Pacific Loon is generally darker, shows less white on the side of the neck and face, and usually exhibits a chin strap. Winter adult Pacific does not show light flecking on the back. Common Loon is larger with a larger bill, and shows an angular head outline. The dark-white line on the side of the neck is irregular and indistinct, compared to the Red-throated. Both other loons hold their bills horizonatally [sic]. | The original documentation form event lasted from 14:00:00/14:30:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Spirit Lake, 1999
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1999-06-28
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Spirit Lake in Dickinson County, IA on June 28, 1999.
|
Schoenewe, Lee A.
|
Red-throated Loon
|
Spirit Lake
|
Spirit Lake, Dickinson County
|
open water
|
The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. | Elimination of similar species: Common Loon + Pacific Loon - size, upturned bill & brownish, speckled neck. | The original documentation form event lasted from 16:35:00/16:55:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Clear Lake, 1999
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1999-04-21
|
1999-05-27
|
Rare birds documentation form
|
Rare bird documentation form for two Red-throated Loons at Clear Lake in Cerro Gordo County, IA on April 21, 1999.
|
Fischer, Carolyn J.
|
Red-throated Loon
|
Clear Lake
|
Clear Lake, Clear Lake Ia
|
Large lake, northside
|
The documentation form by Rita Goranson is the only one submitted and forms the basis of this record. Other observers include Curt Nelson, Jan Walter, and Carolyn Fischer. | Elimination of similar species: Common Loon - was also present, could see larger loon, heavy bill, Pacific Loon - straight bill, black cap extends to eye -
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Clear Lake, 1999
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1999-04-20
|
1999-08-22
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Clear Lake in Cerro Gordo County, IA on April 20, 1999.
|
Goranson, Rita
|
Red-throated Loon
|
Clear Lake
|
Clear Lake, Iowa - on lake north side
|
water
|
The documentation form by Rita Goranson is the only one submitted and forms the basis of this record. Other observers include Jan Walter and Carolyn Fischer. | Elimination of similar species: Common loons were out further but darker with dark around face and around neck, bill larger & darker. | The original documentation form event lasted from 17:00:00/17:20:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Lock and Dam 18, 1998
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1998-12-18
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Lock and Dam 18 in Des Moines County, IA on December 18, 1998. Incorrectly recorded as Lack and Dam 18 on the documentation form.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Red-throated Loon
|
Lock and Dam Number 18
|
Lack [sic] and Dam 18, Des Moines Co., IA
|
Mississippi River above dam, swimming on Iowa side
|
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: Smaller and slimmer than Common, smaller bill. I could not see whether the eye was in the dark or light part of the face. The size and upturned bill argue against Pacific Loon. | The original documentation form event lasted from 09:15:00/09:45:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Coralville Reservoir, 1998
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1998-11-27
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for two Red-throated Loons at Coralville Reservoir in Johnson County, IA on November 27, 1998.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Red-throated Loon
|
Coralville Lake
|
Coralville Res., Johnson Co., IA
|
reservoir
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Jim Fuller. | The original documentation form event occurred around 14:00:00 approximately.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Lake Macbride, 1998
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1998-11-25
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Lake Macbride in Johnson County, IA on November 25, 1998.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Red-throated Loon
|
Lake MacBride
|
Lake Macbride, Johnson Co., IA
|
large artificial lake
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. | Elimination of similar species: The size, bill shape, and gray head and neck eliminate Pacific Loon or small Common Loon. | The original documentation form event lasted from 11:20:00/11:30:00 and 12:30:00/12:40:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Rare bird documentation form for Red-throated Loon at Mid-America Power Plant south pond, 1998
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1998-11-13
|
1998-11-14
|
Rare birds documentation form
|
Rare bird documentation form for a Red-throated Loon at Mid-America Power Plant south pond in Pottawattamie County on November 13, 1998.
|
Padelford, Babs Padelford, Loren
|
Red-throated Loon
|
MidAmerican Energy Ponds
|
Mid-America Power Plant south pond, Pottawattamie County, Iowa
|
|
The documentation form by Babs and Loren Padelford is the only one submitted and forms the basis of this record. | The original documentation form event lasted from 15:05:00/15:55:00.
|
Iowa Ornithologists' Union | MS 166
|
32
|
8
|
|
Records Committee review for rare bird sighting for Brewer's Blackbird at Zirbel Slough, 1996
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-09-08
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Brewer's Blackbird at Zirbel Slough in Cerro Gordo County, IA on September 8, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
|
Bangma, Jim Johnson, Ann
|
Brewer's Blackbird
|
Zirbel Slough
|
Zirbel Slough, Cerro Gordo Co., IA
|
Marsh
|
The documentation form by Jim Bangma and Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: Rusty Blackbird ruled out by solid black color, deeper call note, bill shape. Grackles ruled out by tail length, bill size and shape and call note. Cowbirds ruled out by eye color, tail length and head/bill shape. | The original documentation form event lasted from 14:00:00/14:01:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
8
|
|
Record Committee review for rare bird sighting of Yellow-billed Loon at Clear Lake, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-11-13
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Yellow-billed Loon at Clear Lake in Cerro Gordo County, IA on November 13, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Walter, Janice L.
|
Yellow-billed Loon
|
Clear Lake
|
West end of Clear Lake, Cerro Gordo Co. Ia off Harbor Inn parking lot
|
Sheltered, shallow end of large lake
|
The documentation form by Jan L. Walter is the only one submitted and forms the basis of this record. Other observers include Jim Walter and Curt Nelson. | Elimination of similar species: Large bill, thicker at the base, and painted, not hooked at the tip eliminated immature Double-crested Cormorant. Larger size, bill shape and absence of white crescent from white chin to behind eye eliminated winter plumage Red-necked Grebe. Larger size and bill size, shape, and color eliminated winter plumage Pacific and Red-throated Loons. Heavy yellow bill, head paler than back, narrow area of crown and nape color, and brown appearance eliminated Common Loon. | The original documentation form event lasted from 16:15:00/16:45:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
8
|
|
Records Committee review for rare bird sighting of a Great Black-backed Gull at Whitebreast Point in Red Rock Reservoir, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-12-17
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Whitebreast Point in Red Rock Reservoir in Marion County, IA on December 17, 1994. Includes a record review document with votes and a documentation form submitted to the committee.
|
Johnson, Ann
|
Great Black-backed Gull
|
White Breast Creek
|
Whitebreast Point, Red Rock Reservoir, Marion Co., IA
|
Flying over open water and ice
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. Another observer includes Tim Schantz. | Elimination of similar species: Large size (larger than Herring) eliminated most others. White head and black and white checkering eliminate Lesser Black-backed and Herring. | The original documentation form event lasted from 10:40:00/10:45:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Black Hawk Lake, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-10-23
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Black Hawk Lake in Sac County, IA on October 23, 1994. Includes a record review document with votes and a documentation form submitted to the committee.
|
Ernzen, Peter
|
Great Black-backed Gull
|
Black Hawk Lake
|
Black hawk Lake
|
Lake
|
The documentation form by Pete Ernzen is the only one submitted and forms the basis of this record. Other observers include Bob Livermore. | Elimination of similar species: [...] Because I did not see the bird from front I could not eliminate other species - However due to its extreme size I eliminated all other species. | The original documentation form event lasted from 10:34:00/10:34:30.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting for Great Black-backed Gull near the Keokuk Wastewater Treatment Plant, 1993
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-12-25
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed near the Keokuk Wastewater Treatment Plant in Lee County, IA on December 25, 1993. Includes a record review document with votes and a documentation form submitted to the committee.
|
Cecil, Robert I.
|
Great Black-backed Gull
|
Keokuk Wastewater Plant
|
Near Sewage treatment plant, Mississippi River, Keokuk, Lee Co. IA
|
River
|
The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. Other observers include John Cecil. | Elimination of similar species: All other gulls eliminated based upon size alone. | The original documentation form event lasted from 14:00:00/14:30:00 and around 16:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull near Bettendorf, 1993
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-02-28
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull near Bettendorf in Scott County, IA on February 28, 1993. Includes a record review document with votes and a documentation form submitted to the committee.
|
Fuller, James L
|
Great Black-backed Gull
|
Ben Butterworth Parkway
|
Mississippi River between Bettendorf, Iowa and Moline, Illinois (Scott Co.).
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: [...] In the middle of the group was a gull that was darker than any of the other birds, even the immature Herring Gulls. [...] In general size, this bird appeared almost twice the size of the Ring-billed Gulls, and considerably larger than the Herring Gulls, maybe 25%. It also had a massive bill compared to either of those species. [...] The legs were a dull gray-pink, and they were noticeably thicker than those of the Herring or Ring-billed Gulls. | The original documentation form event lasted from 11:05:00/11:35:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Sandpiper Beach at Saylorville Reservoir, 1992
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-03-07
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Sandpiper Beach at Saylorville Lake in Polk County, IA on March 7, 1992. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Sinclair, Jim
|
Great Black-backed Gull
|
Sandpiper Recreation Area
|
Sandpiper Beach ,Saylorville Lake
|
Beach
|
The documentation form by Jim Sinclair is the only one submitted and forms the basis of this record. | Elimination of similar species: The only gull which approaches the Gr. Bl-backed in size is the Glaucous Gull - this species would not have a dark tail band or dark secondaries or an all dark bill | The original documentation form event occurred around 11:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Lock 19 in Keokuk, 1991
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-02-07
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Lock 19 in Keokuk in Lee County, IA on February 7, 1991. Includes a record review document with votes, an article in Iowa Bird Life, comparison of different gull sightings, and two documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Great Black-backed Gull
|
Lock Number 19
|
Lock 19, Keokuk, Lee Co.
|
|
The documentation form by Steve Dinsmore forms the basis of this record. Another documentation form by Ann Johnson was submitted. Another observer was Beth Brown. | Elimination of similar species: The black mantle really eliminates most other gulls. Western Gull, a remote possibility, is smaller and has a slightly paler mantle. | The original documentation form event lasted from 13:10:00/15:40:00 on February 7, 1991 and 13:32:00/14:20:00 on February 8, 1991.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull near Bettendorf, 1991
|
Administrative records Clippings (information artifacts) Field notes Charts (graphic documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-01-14
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for rare bird sighting of a Great Black-backed Gull near Bettendorf in Scott County, IA on January 14, 1991. Includes a record review document with votes, an article in Iowa Bird Life, appraisal and comparison of relevant bird sightings, and two documentation forms submitted to the committee.
|
Fuller, James L
|
Great Black-backed Gull
|
Bettendorf
|
Mississippi River between Bettendorf, Iowa, and Moline, Illinois. The bird was at times in both states.
|
Ice floes and open water of Mississippi River.
|
The documentation form by Jim Fuller forms the basis of this record. Another documentation form by Thomas H. Kent was submitted. Other observers include Dick Tetrault, Peter Petersen, Ann Barker, Eugene Armstrong, Eloise Armstrong, and Chuck Fuller. | Elimination of similar species: Western gull is the same size as herring gull, as is slaty backed gull and lesser black backed gull is smaller than herring. The very large legs and bill would also speak against lesser black-backed and slaty-backed. | The original documentation form event lasted from 11:05:00/11:40:00 on January 14, 1991 and 07:41:00/07:48:00 and 08:12:00/08:28:00 on January 17, 1991.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Davenport, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-12-13
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Davenport in Scott County, IA on December 13, 1989. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Great Black-backed Gull
|
Davenport
|
Davenport, Scott Co., Iowa
|
Mississippi River north of Credit Is.
|
The documentation form by Thomas H. Kent forms the basis of this record. Another documentation form by Jim Fuller was submitted. | Elimination of similar species: Size, all black upper wing and back, large head and bill, pink legs eliminate all other black-backed gulls. | The original documentation form event lasted from 13:40:00/13:55:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting for Great Black-backed Gull east of Lock and Dam 15 in Davenport, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-12-18
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Lock and Dam 15 in Davenport in Scott County, IA on December 18, 1988. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Petersen, Peter C.
|
Great Black-backed Gull
|
Lock and Dam 15
|
Missisippi River just E (upstream) of Lock 15 in Davenport
|
river ice
|
The documentation form by Peter C. Petersen is the earliest and the one that forms the basis of this record. Another documentation form by Jim Fuller was submitted later. Other observers include Mary Lou Petersen, Walter Zuurdeeg, Ann Barker, and Don Moeller. | Elimination of similar species: Lesser Black-backed Gull - this bird too large, mantle color too dark, legs color was pink, not yellow. | The original documentation form event lasted from 11:40:00/11:50:00 and 13:00:00/13:05:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Sandpiper Beach at Saylorville Reservoir, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-12-10
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Sandpiper Beach at Saylorville Reservoir in Polk County, IA on December 10, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Engebretsen, Bery
|
Great Black-backed Gull
|
Sandpiper Recreation Area
|
Saylorville
|
Specific: Big end of Saylorville Specific: off Sandpiper Beach, half in ice, half open
|
The documentation form by Bery Engebretsen is the only one submitted and forms the basis of this record. Another observer includes Eugene Armstrong. | Elimination of similar species: Larger than Herring gull would seem to eliminate Lesser BB, also, only one dark secondary band on wing white head + large size unlike immature Herring Gull. | The original documentation form event lasted from approximately 11:00:00/11:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
Records Committee review for rare bird sighting of Great Black-backed Gull at Jester Park at Saylorville Reservoir, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-11-07
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Great Black-backed Gull at Jester Park at Saylorville Reservoir in Polk County, IA on November 7, 1987. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Great Black-backed Gull
|
Jester Park
|
Saylorville Reservoir, Polk Co.-off Jester Park
|
feeding with other gulls on large reservoir
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The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Another observer includes Andy Fix. | Elimination of similar species: The large size and dark wingtips eliminates all gulls except Western and Yellow-footed. The massive, dark bill, tail pattern, and pale body color eliminates these. | The original documentation form event lasted from approximately 10:15:00/10:20:00.
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Iowa Ornithologists' Union | MS 166
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11
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8
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