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Records Committee review for rare bird sighting of Black-bellied Whistling-Duck at Big Marsh, 1993
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Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-11-01
|
1996-04-25
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Rare birds documentation form
|
Records Committee review of a Black-bellied Whistling-Duck at Big Marsh in Butler County, IA on November 1, 1993. Includes a record review document with votes, correspondence about the bird sighting, two photographs, an article in The Southwestern Naturalist, and a documentation form submitted to the committee.
|
Dinsmore, James J.
|
Black-bellied Whistling-Duck
|
Big Marsh Wildlife Area
|
Big Marsh
|
freshwater marsh
|
The documentation form by Jim Dinsmore is the only one submitted and forms the basis of this record. Other observers include Rodney Steere. | Elimination of similar species: Nothing it could be confused with
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Iowa Ornithologists' Union | MS 166
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8
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3
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Rare bird documentation form for Trumpeter Swan at Big Marsh, 1997
|
Field notes Forms (documents)
|
Birds--Identification Ornithology Rare birds
|
1997-03-22
|
1997-04-06
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Rare birds documentation form
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Rare bird documentation form for two Trumpeter Swans at Big Marsh in Butler County, IA on March 22, 1997.
|
Proescholdt, Mark
|
Trumpeter Swan
|
Big Marsh Wildlife Area
|
Big marsh - (Butler County)
|
Huge marshy area
|
The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt and Steve Dinsmore. | Elimination of similar species: A Tundra Swan immature is much whiter by late winter than immature trumpeters. Tundra Swans have slightly concave bills and the black of the bills do not go completely to the eye in a triangle. | The original documentation form event lasted from 16:30:00/16:45:00.
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Iowa Ornithologists' Union | MS 166
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32
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30
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Rare bird documentation form for Merlin at Big Marsh, 1983
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1983-04-29
|
1983-04-30
|
Rare birds documentation form
|
Rare bird documentation form for a Merlin at Big Marsh in Butler County, IA on April 29, 1983.
|
Myers, Robert K.
|
Merlin
|
Big Marsh Wildlife Area
|
Big Marsh - Butler Co.
|
Marsh
|
The documentation form by Robert K. Myers is the only one submitted and forms the basis of this record. | Elimination of similar species: Kestrels Tails do not have the bold black bands, and show reddish on tail + back (NOT overall blue-gray). | The original documentation form event lasted from 08:15:00/08:20:00.
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Iowa Ornithologists' Union | MS 166
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33
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32
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Rare bird documentation form for Marbled Godwit at Big Marsh near Parkersburg, 1981
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Field notes
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Birds--Identification Ornithology Rare birds
|
1981-04-05
|
1981-04-07
|
Rare birds documentation form
|
Rare bird documentation form for a Marbled Godwit at Big Marsh near Parkersburg in Butler County, IA on April 5, 1981.
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Moore, Francis L.
|
Marbled Godwit
|
Big Marsh Wildlife Area
|
Big Marsh near Parkersburg, IA (Butler County)
|
Marsh, Shallow and mostly drained marsh
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Bob Myers, Jody Hines, Antoinette Camarata, and Russell Hays. | Elimination of similar species: Hudsonian Godwit has white upper-tail coverts and no cinnamon in the under-wing linings | The original documentation form event lasted from 10:00:00/10:01:00.
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Iowa Ornithologists' Union | MS 166
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34
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14
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Records Committee review for rare bird sighting of Yellow Rail at Big Marsh Wildlife Area, 1980
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Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1980-09-21
|
1993-08-16
|
Rare birds documentation form
|
Records Committee review of a Yellow Rail at Big Marsh Wildlife Area in Butler County, IA on September 21, 1980. Includes a record review document with votes and a documentation form submitted to the committee.
|
Hansen, James L.
|
Yellow Rail
|
Big Marsh Wildlife Area
|
Big Marsh Wildlife Area, 6 mi. N of Parkersburg, Butler County, Iowa
|
General: flooded moist soil plants, primarily grasses and smartweed Specific: I don't know; the bird was in a box in a car when I first saw it.
|
The documentation form by James L. Hansen is the only one submitted and forms the basis of this record. Other observers include Carl Priebe. | Elimination of similar species: None. | The original documentation form event lasted from 08:30:00/10:30:00.
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Iowa Ornithologists' Union | MS 166
|
9
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11
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Rare bird documentation form for Northern Goshawk at Big Marsh, 1984
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Field notes
|
Birds--Identification Ornithology Rare birds
|
1984-03-24
|
1984-03-25
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Rare birds documentation form
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Rare bird documentation form for a Northern Goshawk at Big Marsh in Butler County, IA on March 24, 1984.
|
Moore, Francis L.
|
Northern Goshawk
|
Big Marsh Wildlife Area
|
Big Marsh, Butler Co., IA
|
Open fields at edge of Marsh with rows of trees and hedges
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Bob Myers. | Elimination of similar species: Cooper's Hawk does not have a bold white superciliary line like this bird had. | The original documentation form event lasted from 10:40:00/10:50:00.
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Iowa Ornithologists' Union | MS 166
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33
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25
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Records Committee review for rare bird sighting for Great Gray Owl at Big Marsh, 1996
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Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-02-11
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Great Gray Owl at Big Marsh in Butler County, IA on February 11, 1996. Includes a record review document with votes, two photographs, an article in Field Notes, and seven documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Great Gray Owl
|
Big Marsh Wildlife Area
|
Big Marsh, Butler Co., Iowa
|
At north edge of large man-made marshy area near the Cedar River.
|
The documentation form by Thomas H. Kent forms the basis of this record. Other documentation forms by Jim Fuller, Stephen J. Dinsmore, Jim Dinsmore, Mary Lou and Peter Petersen, Chris Edwards, and Mark Proescholdt were submitted. Other observers include Francis Moore, Beth Proescholdt, Carl Kurtz, Linda Kurtz, Carolyn Fischer, Pat Hansen, Alan Martin, Rita Pedelty, Rita Goranson, Jan Walter, Tim Gedler, Dennis Henrickson, Bruce DeLong, Eugene Armstrong, Eloise Armstrong, Tom Stone, James Scheib, and many unidentified other observers. | Elimination of similar species: Only Barred Owl is remotely similar. The most impressive marks were the yellow eyes, bow tie mark, and large gray facial disks. | The original documentation form event lasted from 16:59:00/17:30:00.
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Iowa Ornithologists' Union | MS 166
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12
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18
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Rare bird documentation form for King Rail at Big Marsh, 1983
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1983-05-21
|
1983-05-27
|
Rare birds documentation form
|
Rare bird documentation form for a King Rail at Big Marsh in Butler County, IA on May 21, 1983.
|
Proescholdt, Beth
|
King Rail
|
Big Marsh Wildlife Area
|
Big Marsh, north of Parkersburg, Iowa
|
flooded marsh, dike
|
The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Other observers include Mark Proescholdt and Phyllis Harris. | Elimination of similar species: Virginia Rail - this bird was twice as large as the Virginia Rails we were flushing, and it had no gray cheeks | The original documentation form event lasted from 15:00:00/15:05:00.
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Iowa Ornithologists' Union | MS 166
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33
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41
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Rare bird documentation form for Northern Goshawk at Big Rock Park in Pella, 1983
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1983-11-26
|
1983-12-01
|
Rare birds documentation form
|
Rare bird documentation form for a Northern Goshawk at Big Rock Park in Pella in Marion County, IA on November 26, 1983.
|
Brand, Gordon James
|
Northern Goshawk
|
Big Rock City Park
|
Big Rock Park, Pella, Iowa
|
80 acre timber tract but near Red Rock Reservoir.
|
The documentation form by Gordon Brand is the only one submitted and forms the basis of this record. Other observers include Raymond Brand. | Elimination of similar species: Coopers Hawk. This Hawk had no horizontal barring on the belly. It was larger and had very pronounced dark eyepatch. | The original documentation form event lasted from 10:00:00/10:02:00.
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Iowa Ornithologists' Union | MS 166
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33
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25
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Rare bird documentation form for Merlin at Big Sand Mound, 1984
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1984-09-08
|
1984-10-28
|
Rare birds documentation form
|
Rare bird documentation form for a Merlin at Big Sand Mound in Muscatine County, IA on September 8, 1984.
|
Newlon, Michael C.
|
Merlin
|
Big Sand Mound Nature Preserve
|
Big Sand Mound Muscatine Co.
|
extensive sandy prairie w/ scattered small trees
|
The documentation form by Mike Newlon is the only one submitted and forms the basis of this record. | Elimination of similar species: falcon shape, banded tail, lack of distinct face pattern yield ID. | The original documentation form event lasted from 13:30:00/13:40:00.
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Iowa Ornithologists' Union | MS 166
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33
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32
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Records Committee review for rare bird sighting for Fish Crow at Big Sand Mound Nature Preserve, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-05-08
|
1997-10-03
|
Rare birds documentation form
|
Records Committee review for a Fish Crow at Big Sand Mound Nature Preserve in Muscatine County, IA on May 8, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Brush, Tim
|
Fish Crow
|
Big Sand Mound Nature Preserve
|
Big Sand Mound Nature Preserve, extreme NE Louisa + SE Muscatine Counties - approximately on boundary
|
bottomland forest/pond
|
The documentation form by Tim Brush is the only one submitted and forms the basis of this record. | Elimination of similar species: Calls eliminated American Crows, which were calling at the same time. I am familiar with both adult + young crow calls of both American + Fish Crows. The calls were identical to those of Fish Crows in New Jersey. The circling behavior is unique to Fish Crows + the upriver migration is typical of Fish Crows in NJ - overmigration | The original documentation form event lasted from 09:53:00/09:54:00.
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Iowa Ornithologists' Union | MS 166
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12
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46
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Rare bird documentation form for Black Scoter at Big Spirit Lake, 1985
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1985-11-14
|
1985-11-15
|
Rare birds documentation form
|
Rare bird documentation form for a Black Scoter at Big Spirit Lake in Dickinson County, IA on November 14, 1985.
|
Harr, Douglas C.
|
Black Scoter
|
Spirit Lake
|
Big Spirit Lake, Dickinson County, Iowa
|
seen on open water of Big Spirit Lake
|
The documentation form by Douglas C. Harr is the only one submitted and forms the basis of this record. | Elimination of similar species: White-winged Scoter - no white evident on wings or head. Surf Scoter -- no white evident on head (immatures of either of these species might appear similar to Black Scotor, except for presence of orange knob) Coot - smaller, has a whitish bill. | The original documentation form event lasted from 15:20:00/15:31:00.
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Iowa Ornithologists' Union | MS 166
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33
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13
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Records Committee review for rare bird sighting for Fish Crow at Big Timber Unit of Port Louisa National Wildlife Refuge , 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-04-25
|
1997-10-03
|
Rare birds documentation form
|
Records Committee review of a Fish Crow at Big Timber Unit of Port Louisa National Wildlife Refuge in Louisa County, IA on April 25, 1994. Includes a record review document with votes and two documentation forms submitted to the committee.
|
McKay, Kelly
|
Fish Crow
|
Port Louisa National Wildlife Refuge - Big Timber Division
|
Big Timber Unit of Mark Twain National Wildlife Refuge approx. 2.0 miles downstream of Kilpeck landing. This landing is located 8.0 miles South of Muscatine, Ia. on County Road X61.
|
Bottomland Hardwood Forest
|
The documentation form by Kelly McKay forms the basis of this record. Another documentation form by Peter C. Petersen was submitted. Other observers include Brian Blevins, Michael Bornstein, and Gerald White. | Elimination of similar species: American Crow: different sounding calls; This bird was smaller than American Crows | The original documentation form event lasted from 10:00:00/10:05:00.
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Iowa Ornithologists' Union | MS 166
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12
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46
|
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Rare bird documentation form for King Rail at Big Wall Lake, 1986
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1986-09-14
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a King Rail at Big Wall Lake in Wright County, IA on September 14, 1986.
|
Dinsmore, Stephen J.
|
King Rail
|
Big Wall Lake
|
Big Wall Lake, Wright Co.
|
large cattail marsh
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The large size and large bill eliminate Virginia Rail. The rusty (not grayish) underparts eliminate the very similar Clapper Rail (!!). | The original documentation form event occurred around 17:15:00.
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Iowa Ornithologists' Union | MS 166
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33
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41
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Rare bird documentation form for Sharp-tailed Sparrow at Big Wall Lake, 1986
|
Field notes
|
Birds--Identification Ornithology Ornithology--Technique Rare birds
|
1986-09-14
|
1986-09-17
|
Rare birds documentation form
|
Rare bird documentation form for a Sharp-tailed Sparrow at Big Wall Lake in Wright County, IA on September 14, 1986.
|
Dinsmore, Stephen J.
|
Nelson's Sharp-tailed Sparrow
|
Big Wall Lake Wildlife Management Area
|
Big Wall Lake, Wright Co.
|
in wet, grassy area at north end of marsh
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: LeConte's Sparrow eliminated by the lighter back color, lack of a gray nape, and different head pattern. | The original documentation form event lasted from 16:15:00/16:25:00.
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Iowa Ornithologists' Union | MS 166
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35
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59
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Rare bird documentation form for White-winged Scoter at Big Wall Lake, 1998
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1998-09-05
|
1998-09-06
|
Rare birds documentation form
|
Rare bird documentation form for a White-winged Scoter at Big Wall Lake in Wright County, IA on September 5, 1998.
|
Dinsmore, James J.
|
White-winged Scoter
|
Big Wall Lake
|
Big Wall Lake, Wright County
|
open water of large freshwater marsh
|
The documentation form by Jim Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: Size and color immediately pointed toward a scoter. Eye patch immediately identified it as White-winged, further cooroborated [sic] when white wing patch seen. | The original documentation form event lasted from 08:15:00/08:20:00.
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Iowa Ornithologists' Union | MS 166
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33
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12
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Rare bird documentation form for Baltimore Oriole at Cedar Rapids, 1990
|
Field notes
|
Bird feeders Birds--Behavior Birds--Identification Ornithology Rare birds
|
1990-12-15
|
1990-12-31
|
Rare birds documentation form
|
Rare bird documentation form for a Baltimore Oriole at Cedar Rapids in Linn County, IA on December 15, 1990.
|
Wickham, Peter P.
|
Baltimore Oriole
|
Cedar Rapids
|
Bird feeder, 100 Thompson Drive S.E., Cedar Rapids
|
Suburban area, with condominiums, private homes, lawns & trees
|
The documentation form by Pete Wickham is the only one submitted and forms the basis of this record. Other observers include Jim Durbin and three unidentified people with other bird feeders. | Elimination of similar species: There are no similar species that I can think of. It wasn't a Bullock's type, which would have orange on the face and a big white wing patch.
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Iowa Ornithologists' Union | MS 166
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35
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79
|
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Rare bird documentation form for Yellow Rail at Sweet Marsh, 1980
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1980-05-18
|
N/A
|
Rare birds documentation form
|
Rare bird documentation form for a Yellow Rail at Sweet Marsh in Bremer County, IA on May 18, 1980.
|
Moore, Francis L.
|
Yellow Rail
|
Sweet Marsh
|
Bird was located on East side of Sweet Marsh, which is outside of Tripoli to the East. Observation was on a dike that comes off of and South of parking lot on second road going to the marsh as you proceed North from the Southern part of the Marsh. See map for location at asterisk.
|
Habitat bird was found in was a grassy area about 2' to 2 1/2' tall about 2' from dike and extending approximately 50' from dike. All around this particular area was large concentrations of cattails and sedges. Water was approximately 2" to 4" deep in area of sighting with deeper water on 3 sides of the area and the dike on the fourth side.
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Bob Myers and Joe Schaufenbuel. | The original documentation form event lasted from 08:15:00/08:15:02.
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Iowa Ornithologists' Union | MS 166
|
33
|
39
|
|
Records Committee review for rare bird sighting of Yellow Rail at Sweet Marsh, 1980
|
Administrative records Field notes Maps (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1980-05-18
|
1993-08-16
|
Rare birds documentation form
|
Records Committee review of a Yellow Rail at Sweet Marsh in Bremer County, IA on May 18, 1980. Includes a record review document with votes, a map of the sighting area, and a documentation form submitted to the committee.
|
Moore, Francis L.
|
Yellow Rail
|
Sweet Marsh
|
Bird was located on East side of Sweet Marsh, which is outside of Tripoli to the East. Observation was on a dike that comes off of and South of parking lot on second road going to the marsh as you proceed North from the Southern part of the Marsh. See map for location, at asterisk.
|
Habitat bird was found in was a grassy area about 2' to 2 1/2' tall about 2' from dike and extending approximately 50' from dike. All around this particular area was large concentrations of cattails and sedges. Water was approximately 2" to 4" deep in area of sighting with deeper water on 3 sides of the area and the dike on the fourth side.
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Robert Myers and Joe Schaufenbuel. | The original documentation form event lasted from 08:15:00/08:15:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
11
|
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Records Committe review for rare bird sighting for Whimbrel at Bjorkboda Marsh, 1995
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-10-01
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review for a Whimbrel at Bjorkboda Marsh in Hamilton County, IA on October 1, 1995. Includes one record review document with votes and a documentation form submitted to the committee.
|
Jackson, Maridel
|
Whimbrel
|
Bjorkboda Marsh
|
Bjorkboda Marsh in Hamilton Co.
|
|
The documentation form by Maridel Jackson is the only one submitted and forms the basis of this record. Another observer was Barb Bettis. | Elimination of similar species: [...] It too landed in the shallow water and muddy shore area and as I scoped it dettermined it had to be a whimbrel. I have seen them only in Texas, but this bird could not have been anything else. It was slightly larger than the willet or the greater yellow legs and it had a obvious white eyestripe and dark legs. It's bill was not nearly as long a long billed curlew, but was obviously very decurved. | The original documentation form event lasted from 14:00:00/14:30:00.
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Iowa Ornithologists' Union | MS 166
|
9
|
23
|
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Rare bird documentation form for Prairie Falcon east of Reinbeck, 1989
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1989-02-26
|
1989-02-27
|
Rare birds documentation form
|
Rare bird documentation form for a Prairie Falcon east of Reinbeck in Black Hawk County, IA on February 26, 1989.
|
Proescholdt, Beth
|
Prairie Falcon
|
Reinbeck
|
Black Hawk County - 4 1/2 miles east of Reinbeck on #175
|
open farmland, unused silos beside busy road
|
The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Other observers include Mark Proescholdt, Dennis Thompson, Cecille Thompson, Reid Allen, Pam Allen, Eugene Armstrong, and Eloise Armstrong. | Elimination of similar species: Peregrine - the bird we saw was very light brown, had a thin mustache stripe & not a Peregrine's wider sideburn, & it had dark axillars as well as underwing coverts. | The original documentation form event lasted from 17:10:00/17:45:00.
|
Iowa Ornithologists' Union | MS 166
|
33
|
35
|
|
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.
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Iowa Ornithologists' Union | MS 166
|
11
|
8
|
|
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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Iowa Ornithologists' Union | MS 166
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34
|
35
|
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Records Committee review for rare bird sighting of Sabine's Gull at Black Hawk Lake, 1994
|
Administrative records Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-09-05
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Sabine's Gull at Black Hawk Lake in Sac County, IA on September 5, 1994. Includes a record review document with votes, a photocopy of a photograph, and eight documentation forms submitted to the committee.
|
Padelford, Babs Padelford, Loren
|
Sabine's Gull
|
Black Hawk Lake
|
Black Hawk Lake and spoil pond east of the lake, Lake View, Sac County
|
|
The documentation form by Babs Padelford and Loren Padelford forms the basis of this record. Other documentation forms by Ross Silcock, Peter Ernzen, Thomas H. Kent, James Fuller, Don Poggensee, Mark Proesholdt, and Ed Thelen were submitted. Other observers include Roland Barth, Jim Sinclair, Dick Tetrault, Jane Fuller, Beth Proescholdt, Eugene Armstrong, Eloise Armstrong, Doug Rose, Russ Widner, Rob Thelen, and many unidentified other observers. | Elimination of similar species: [...] It was a small, dark gray gull, smaller in size than Ring-billed Gulls that were present for direct comparison. The mantle color was darker than Ring-billed mantles. | The original documentation form event lasted from 08:30:00/10:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
9
|
|
Rare bird documentation form for Glaucous Gull at Black Hawk Lake, 1995
|
Field notes
|
Birds--Identification Ornithology Rare birds
|
1995-11-18
|
1996-01-15
|
Rare birds documentation form
|
Rare bird documentation form for a Glaucous Gull at Black Hawk Lake in Sac County, IA on November 18, 1995.
|
Huser, Bill F.
|
Glaucous Gull
|
Black Hawk Lake
|
Blackhawk Lake, Sac County, IA
|
lake ice/open water
|
The documentation form by Bill Huser is the only one submitted and forms the basis of this record. Other observers include Jerry Probst, Bob Livermore, Pete Ernzen, and unidentified members of the Loess Hills Audubon Society. | Elimination of similar species: Relatively few gulls have pale coloration in their immature plumages. Also, few have pale colored primaries. Those fitting this description: Iceland Gull- smaller than a Herring Gull, with a disproportionally [sic] smaller bill. 1st winter with an all dark bill. Thayer's Gull- usually darker colored over-all, with an [sic] smaller, all dark bill in immatures and usually some darker colored primaries. Glaucous-winged Gull- though having a large bill, it is all dark in 1st and 2nd winter plumages | The original documentation form event lasted from 09:00:00/09:15:00.
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Iowa Ornithologists' Union | MS 166
|
34
|
37
|