|
Records Committee review for rare bird sighting of Black-necked Stilt at Union Slough National Wildlife Refuge, 1984
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-06-02
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of two Black-necked Stilts at Union Slough National Wildlife Refuge in Kossuth County, IA on June 2, 1984. Includes a record review document with votes, a summary of the review, a photocopy of a photo, an article of Iowa Bird Life, and two documentation forms submitted to the committee.
|
Myers, Robert K.
|
Black-necked Stilt
|
Union Slough National Wildlife Refuge
|
Union Slough National Wildlife Refuge - Kossuth County, Iowa
|
General: Large cattail marsh. Specific: Shallow muddy pool on north edge of Refuge.
|
The documentation form by Robert Myers forms the basis of this record. Another documentation form by Francis L. Moore was submitted. Other observers include Russell Hays and several unidentified observers. | Elimination of similar species: Nothing really is similar. American Avocet has upturned bill and shows much white in wings. | The original documentation form event lasted from 07:58:00/08:00:00 and 08:30:00/08:45:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
20
|
|
Records Committee review for rare bird sighting of Black-necked Stilt south of Ainsworth, 1996
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-05-18
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review of three Black-necked Stilts south of Ainsworth in Washington County, IA on May 18, 1996. Includes a record review document with votes, two photos, an article in Iowa Bird Life, an article in Field Notes, and five documentation forms submitted to the committee.
|
Proescholdt, Mark
|
Black-necked Stilt
|
Ainsworth
|
Washington County - south of #92 about 1/2 mile on #218
|
Wet areas in field after flooded creek spilled out into fields
|
The documentation form by Mark Proescholdt is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Thomas H. Kent, Jim Dinsmore, and Chris Edwards were submitted later. Other observers include Cal Knight, Bernie Knight, Chuck Fuller, Eugene Armstrong, Eloise Armstrong, Richard Tetrault, Peter Petersen, Francis Moore, Ann Johnson, Hank Zalatel, Beth Proescholdt, and Russ Widner. | Elimination of similar species: There are no similar species that come to mind. | The original documentation form event lasted from 14:00:00/14:10:00 on May 18, 1996 and 15:00:00/15:10:00 on May 19th, 1996.
|
Iowa Ornithologists' Union | MS 166
|
9
|
20
|
|
Records Committee review for rare bird sighting of Bonaparte's Gull at Ottumwa, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-01-01
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review for a Bonaparte's Gull at Ottumwa in Wapello County, IA on January 1, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Hoskins, Nelson R.
|
Bonaparte's Gull
|
Ottumwa
|
Ottumwa, Ia.
|
Des Moines River, Below Hydro-dam
|
The documentation form by Nelson Hoskins is the only one submitted and forms the basis of this record. | Elimination of similar species: Franklin's gull - above mentioned markings. | The original documentation form event lasted from 08:45:00/08:55:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
22
|
|
Records Committee review for rare bird sighting of Brant at De Soto National Wildlife Refuge, 1980
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1980-11-02
|
1993-08-16
|
Rare birds documentation form
|
Records Committee review of a Brant at De Soto National Wildlife Refuge in Harrison County, IA on November 2, 1980. Includes a record review document with votes, an Iowa Bird Life article, and five documentation forms submitted to the committee.
|
Dinsmore, James J.
|
Brant
|
DeSoto National Wildlife Refuge
|
DeSoto Natl. Wildlife Refuge, Harrison Co (shot in NE corner on Iowa side of refuge)
|
Shot in field on refuge
|
The documentation form by James Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Randall G. Sease and Maury J. Muhm were submitted later. Other observers include John Kounas. | Elimination of similar species: Canada Goose-size of hutchin's race but no white cheek patch, otherwise bill size, neck proportions, and overall size matched Hutchins. Brant-not adult because lacked white necklace, not dark race because belly was light. | The original documentation form event lasted from 09:30:00/10:00:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
9
|
|
Records Committee review for rare bird sighting of Brant at De Soto National Wildlife Refuge, 1988
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-12-18
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review of a Brant at De Soto National Wildlife Refuge in Harrison County, IA on December 18, 1988. Includes a record review document with votes, an article in Iowa Bird Life, a copy of a photo, and eight documentation forms submitted to the committee.
|
Rosenbaum, Mindy
|
Brant
|
DeSoto National Wildlife Refuge
|
In front of De Soto Visitor Center
|
frozen lake
|
The documentation form by Mindy Rosenbaum is the earliest and the one that forms the basis of this record. Other documentation forms by Steve Dinsmore, Robert K. Myers, Jim Fuller, Thomas H. Kent, Tanya Bray, Robert Cecil, and Ross Silcock were submitted later. Other observers include Francis Moore, Babs Padelford, Loren Padelford, John Hoogerheide, Eloise Armstrong, Eugene "Gene" Armstrong, and John Cecil. | The original documentation form event lasted from 14:00:00/14:45:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
9
|
|
Records Committee review for rare bird sighting of Brant at Riverton Wildlife Management Area, IA, 1983
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-11-18
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Brant north of Riverton Wildlife Management Area in Fremont County, IA on November 18, 1983. Includes a record review document with votes, an article in Wildlife Notes, internal correspondence, and a documentation form submitted to the committee.
|
Priebe, Don
|
Brant
|
Riverton Wildlife Management Area
|
6 mi. N of Riverton on No. 2
|
Corn field
|
The documentation form by Don Priebe is the earliest and the one that forms the basis of this record. Other observers include Steve Benson, Carl Priebe, and Jim Priebe.
|
Iowa Ornithologists' Union | MS 166
|
8
|
9
|
|
Records Committee review for rare bird sighting of Brant at Whitebreast Park, 1987
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-10-04
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review of a Brant at near Whitebreast Park in Marion County, IA on October 4, 1987. Includes a record review document with votes, an article in Iowa Bird Life and a documentation form submitted to the committee.
|
Dinsmore, James J.
|
Brant
|
Whitebreast Recreation Area
|
released at Polk City Wildlife Area; bird had been caught on south shore of Red Rock Reservoir, Marion County
|
freshwater lake
|
The documentation form by Jim Dinsmore is the earliest and the one that forms the basis of this record. Other observers include Jennifer Lancaster, Tom Miller, Steve Dinsmore, and Roger Sedlacek. | Elimination of similar species: Canada Goose-small size eliminates all but the smallest races; the bird lacked a cheek patch. | The original documentation form event lasted from 11:00:00/08:00:00 next day when they released the bird.
|
Iowa Ornithologists' Union | MS 166
|
8
|
9
|
|
Records Committee review for rare bird sighting of Broad-winged Hawk at Dubuque, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-01-02
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review of a Broad-winged Hawk at Dubuque in Dubuque County, IA on January 2, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Miller, John Carl
|
Broad-winged Hawk
|
Dubuque
|
Dubuque, IA along the Heritage Trail near Sundown Ski area
|
Woodland with fields
|
The documentation form by John Carl Miller is the earliest and the one that forms the basis of this record. Other observers include Leta Miller. | The original documentation form event lasted from 11:00:00/11:07:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
31
|
|
Records committee review for rare bird sighting of Brown Pelican at De Soto National Wildlife Refuge, 1992
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-05-06
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review for a Brown Pelican at De Soto National Wildlife Refuge in Harrison County, IA on May 6, 1992. Includes a record review document with votes, an article in the Nebraska Bird Review about the sighting, two photographs, and four documentation forms submitted to the committee.
|
Rose, B.J.
|
Brown Pelican
|
DeSoto National Wildlife Refuge
|
DeSoto National Wildlife Refuge, Harrison County, IA, and Washington County, NE. It was on the south end of the oxbow, just above the dam.
|
Missouri River oxbow lake
|
The documentation form by B.J. Rose is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent, Jim Fuller, and Peter C. Petersen were submitted later. Other observers include Babs Padelford, Ross Silcock, Dick Tetrault, and Brian Blevins. | Elimination of similar species: White Pelican is white with black wing tips; some were present for comparison. | The original documentation form event lasted from 09:00:00/09:30:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
11
|
|
Records Committee review for rare bird sighting of Brown Pelican at Keokuk, 1982
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-10-18
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for two Brown Pelicans at Keokuk in Lee County, IA on October 18, 1982. Includes a record review document with votes, a summary of the records review, and two documentation forms submitted to the committee.
|
Fawks, Elton
|
Brown Pelican
|
Keokuk
|
We were stalled on Hamilton to Keokuk Bridge
|
Mississippi River
|
The documentation forms by Elton Fawks are the only ones submitted and form the basis of this record. Other observers include Margaret Flesher. | Elimination of similar species: White Pelican eliminated by color and no black primaries. Color compared to white gulls in view at the same time. | The original documentation form event lasted from 09:20:00/09:21:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
11
|
|
Records Committee review for rare bird sighting of Brown Pelican at Lake Rathbun, 1992
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-03-21
|
1994-10-18
|
Rare birds documentation form
|
Records Committee review for four Brown Pelicans at Lake Rathbun in Appanoose County, IA on March 21, 1992. Includes a record review document with votes and one documentation form submitted to the committee.
|
Exline, Nancy
|
Brown Pelican
|
Rathbun Lake
|
Just west of mile marker 16 on Highway 142 on north side of Rathbun Reservoir, Appanoose County.
|
Upper reaches of one arm of the Reservoir with shallow water and flood prone vegetation on S. side of highway, shallow captive water ponds and pasture on north side.
|
The documentation form by Nancy Exline is the only one submitted and forms the basis of this record. Other observers include Roy Downing. | Elimination of similar species: None except whites-cormorants mentioned as possible by Darrell Howell and Dinsmore; however, I am very familiar with this species also and know it was not cormorants. | The original documentation form event occurred at 10:30:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
11
|
|
Records Committee review for rare bird sighting of Brown Pelican at Lock and Dam 18, 1996
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-11-04
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Brown Pelican at Lock and Dam #18 in Des Moines County on November 4, 1996. Includes a record review document with votes, an article in Iowa Bird Life, an article in an Illinois bird magazine, and a documentation form submitted to the committee.
|
Fuller, James L
|
Brown Pelican
|
Lock and Dam Number 18
|
Lock and Dam #18 Mississippi River (Des Moines County)
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. Other observers include Jim Scheib, John Rutenbeck, Myrna Deaton, Bernie Knight, Cal Knight, and Chuck Fuller. | Elimination of similar species: The White Pelican is white with yellow-orange or orange bill. | The original documentation form event lasted from 06:42:00/07:05:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
11
|
|
Records committee review for rare bird sighting of Brown Pelican at Saylorville Reservoir, 1999
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1999-09-22
|
2000-11-28
|
Rare birds documentation form
|
Records committee review of a Brown Pelican at Saylorville Reservoir in Polk County, IA on September 22, 1999. Includes a record review document with votes and four documentation forms submitted to the committee.
|
Fuller, James L
|
Brown Pelican
|
Saylorville Lake
|
Saylorville Reservoir, off Campground #4 of Jester Park (Polk Co.)
|
|
The documentation form by Jim Fuller is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent, James Dinsmore, and Chris Edwards were submitted later. Other observers include Tom Staudt, James Huntington, Aaron Brees, Eloise Armstrong, Chris Caster, and Ann Johnson. | Elimination of similar species: Only other North American pelican is White, and size, body color, and bill color alone eliminate it. | The original documentation form event lasted from 11:15:00/12:10:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
11
|
|
Records Committee review for rare bird sighting of Buff-Breasted Sandpiper at Cone Marsh, 1996
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-03-29
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a Buff-breasted Sandpiper at Cone Marsh in Louisa County, IA on March 29, 1996 Includes a record review document with votes and a documentation form submitted to the committee.
|
Fuller, James L
|
Buff-breasted Sandpiper
|
Cone Marsh Wildlife Management Area
|
Cone Marsh (Louisa County)
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: Comparisons to Pectoral and Baird's Sandpipers have been made during description. | The original documentation form event lasted from 13:30:00/13:50:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
8
|
|
Records Committee review for rare bird sighting of Burrowing Owl east of Larchwood, 1998
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1998-08-30
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Burrowing Owl east of Larchwood in Lyon County, IA on August 30, 1998. Includes a record review document with votes, an article in Iowa Bird Life, and a photograph submitted to the committee.
|
Harr, Douglas C.
|
Burrowing Owl
|
Larchwood
|
[...] probable nest site three miles east of Larchwood.
|
|
The article by Doug Harr forms the basis of this record. Another observer is Dolly Zangger. | Elimination of similar species: [...] I saw no evidence of other owls on this or subsequent visits.
|
Iowa Ornithologists' Union | MS 166
|
12
|
17
|
|
Records Committee review for rare bird sighting of California Gull at Babcock Access at Coralville Reservoir, 1990
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-10-27
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a California Gull at Babcock Access at Coralville Reservoir in Johnson County, IA on October 27, 1990. Includes a record review document with votes, two articles in Iowa Bird Life, and five documentation forms submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
California Gull
|
Babcock Access
|
Babcock Access, Coralville Reservoir, Johnson County, Iowa
|
shallow, open area of reservoir
|
The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Randy Pinkston, Carol Thompson, and Carl J. Bendorf were submitted later. Other observers include Timothy Dwyer, John Cordell, James Huntington, Cal Knight, Bernie Knight, and Rick Hollis. | Elimination of similar species: First-year Ring-billed Gulls were all in first winter plumage with gray mantle and were much lighter overall. The only other species considered is juvenile Herring Gull. The size is small for Herring Gull. The elongated appearance and short legs fit California Gull. Most young Herrings that I see in early fall have mostly dark bills that are larger than that of this bird. The double inner wing bar and lighter tertial tips fit California Gull. The overall relatively uniform and relatively light brown color without windows in the inner primaries also made this bird look different from Herring Gull. | The original documentation form event lasted from 15:15:00/16:55:00 on October 27, 1990 and from 19:10:00/22:30:00 and 15:00:00/16:00:00 on October 28, 1990.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Carter Lake, 1993
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-11-21
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a California Gull at Carter Lake in Pottawattamie County, IA on November 21, 1993. Includes a record review document with votes, a photograph, an article in Iowa Bird Life, and three documentation forms submitted to the committee.
|
Bray, Tanya
|
California Gull
|
Carter Lake
|
Carter Lake, Pottawattamie County
|
|
The documentation form by Tanya Bray forms the basis of this record. Other documentation forms by Loren and Babs Padelford, and Ross Silcock were submitted. Other observers include Jerry Toll and B.J. Rose. | Elimination of similar species: Both Ring-billed and Herring Gulls are eliminated by bill coloration, size, slightly darker mantle, and eye color. Western, Lesser-black backed would be darker mantled, different bill coloration. | The original documentation form event lasted from 10:30:00/10:58:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Cherry Glen Recreation Area at Saylorville Reservoir, 1986
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-12-07
|
1996-01-25
|
Rare birds documentation form
|
Records Committee review for a California Gull at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on December 7, 1986. Includes a record review document with votes, correspondence about the bird sighting and a request for re-evaluation of sighting, summary of the review, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
California Gull
|
Cherry Glen Recreation Area
|
Saylorville Reservoir, Polk Co. (Cherry Glen Recreation Area)
|
sitting on ice with other gulls
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: Herring Gull eliminated by larger size, lighter mantle color, lack of black and red spots on bill, and wrong leg color (pink, although a very few Herring Gull show yellowish legs). Ring-billed Gull eliminated by smaller size, lighter mantle color, lack of a black ring on bill, and by yellower leg color. | The original documentation form event lasted from 13:13:00/14:08:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Cherry Glen Recreation Area at Saylorville Reservoir, 1997
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-12-09
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a California Gull at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on December 9, 1997. Includes a record review document with votes and a documentation form submitted to the committee.
|
Overton, Michael D.
|
California Gull
|
Cherry Glen Recreation Area
|
Polk co., Saylorville Reservoir, Cherry Glen Recreation Area
|
On ice along lakeshore of large manmade lake in mixed hardwood forest agricultural cropland.
|
The documentation form by Michael D. Overton is the only one submitted and forms the basis of this record. Other observers include Eugene Armstrong and Eloise Armstrong. | Elimination of similar species: Ring-billed Gull, Herring Gull: Immatures of both species were present so direct comparisons were possible. Bill color, shape, and size reletive [sic] to head. Tail and rump color. Wing color and pattern especially mantle, greater coverts, and secondaries. | The original documentation form event lasted from 10:20:00/10:55:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Credit Island, 1989
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-23
|
1993-07-21
|
Rare birds documentation form
|
Records Committee review for a California Gull at Credit Island in Scott County, IA on November 23, 1989. Includes a record review document with votes, an article in Iowa Bird Life, correspondence about the sighting from Louise Augustine to Carl Bendorf, and three documentation forms submitted to the committee.
|
Augustine, Louise
|
California Gull
|
Credit Island
|
Credit Island - Davenport, Iowa - Scott County
|
This is an unfamiliar Area for me - I have never birded there before - The Place Credit Island - Backwater of Mississippi River - There was some ICE and open water - Many Gulls were in this Backwater area - on ice and in water. Probably around 1,500 Gulls -
|
The documentation form by Louise Augustine forms the basis of this record. Other documentation forms by Peter C. Petersen and Jim Fuller were submitted. Other observers include Randy Pinkston, Mary Lou Petersen, Jerome Augustine, David Augustine, and Julie Augustine. | Elimination of similar species: Herring Gull - darker mantle - Dark eye - Leg Color - ashy-green gray not Pink - smaller size - slimmer build Ring-billed Gull - mantle too dark - dark eye - Bill had only a spot Leg Color not yellow - This bird larger than Ring-billed gulls - | The original documentation form event lasted from 12:00:00/13:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Gull Point at West Okoboji Lake, 1997
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-09-07
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review of a California Gull at Gull Point at West Okoboji Lake in Dickinson County, IA on September 7, 1997. Includes a record review document with votes, correspondence from Ken Brock to Thomas Kent, and two copies of a documentation form submitted to the committee.
|
Schoenewe, Lee A.
|
California Gull
|
Gull Point
|
Gull Point, West Lake Okoboji, Dickinson Co.
|
Rocky point on natural lake
|
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Lost Island Lake, 1996
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-11-03
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a California Gull at Lost Island Lake in Palo Alto County, IA on November 3, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
|
Schoenewe, Lee A.
|
California Gull
|
Lost Island Lake
|
N. Shore of Lost Island Lake, Palo Alto, Co.
|
Shoreline
|
The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. | Elimination of similar species: Herring Gull - bill, eye and leg color Ring-billed Gull - Bill size, tail + wingtips in flight | The original documentation form event lasted from 10:35:00/10:55:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
1
|
|
Records Committee review for rare bird sighting of California Gull at Mini-Wakan State Park, 1996
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-09-06
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for a California Gull at Mini-Wakan State Park in Dickinson County, IA on September 6, 1996. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Bangma, Jim Johnson, Ann
|
California Gull
|
Mini Wakan State Park
|
Spirit Lake, north end, Dickinson Co., IA
|
Lakeshore
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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: Ring-billed is ruled out by the solid gray mantle combined with the extensive molt of the flight feathers. Ring-bills and similar 3 year gulls obtain the gray mantle during a post-juvenal molt. Flight feathers are not molted at this time. Flight feathers are molted after one year, at which time the body of a Ring-bill would be much whiter. Also, the mantle was a much darker shade of gray than any Ring-bill present. Additionally, Ring-billed Gull's bill is proportionally smaller and thinner, with more curve. Herring Gull would be larger. The mantle of a Herring Gull would be paler gray, nearly the same shade as that of the Ring-bills. The bill would be proportionally heavier with a more marked gonydeal angle. Herring Gulls may show a black tipped bill, but the black normally blends into the pink of the base or runs in along the cutting edges of the bill. The bill and legs would be brighter pink. Other similarly sized extralimitals can be ruled out by the mantle color as well as bill pattern and shape. A striking feature of this bird was its leg length. In an effort to better understand this, Bangma paid a visit to the American Museum of Natural History and examined specimens of Herring, Ring-billed and California Gulls. Measurements were made of a representative selection of specimens. The following chart shows the results. [Chart] While there is some overlap between these species, it is interesting to note that the breaking point between California Gull and the other two is very near the ratio of 1.5. While not diagnostic by itself, the length of this bird's tarsus relative to the culmen as estimated by us in the field is indicative of California Gull. | The original documentation form event lasted from 11:00:00/11:40:00.
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Iowa Ornithologists' Union | MS 166
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11
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1
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Records Committee review for rare bird sighting of California Gull at Oak Grove Beach at Saylorville Reservoir, 1990
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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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1990-09-08
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1993-07-17
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Rare birds documentation form
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Records Committee review for a California Gull at Oak Grove Beach at Saylorville Reservoir in Polk County, IA on September 8, 1990. Includes a record review document with votes and the article California Gull at Saylorville Reservoir in Iowa Bird Life 61:20 by Stephen Dinsmore reviewed by the committee.
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Dinsmore, Stephen J.
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California Gull
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Oak Grove Recreation Area
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[...] Oak Grove Beach Recreation Area at Saylorville Reservoir, Polk County.
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The article by Stephen J. Dinsmore forms the basis of this record. | Elimination of similar species: [...]The bird was similar in size to the largest Ring-billed Gulls, but slightly larger than others. I approached closer and noted that, when compared to a Ring-billed Gull, the bird had duller yellow legs, a stouter bill with black and red spots near the tip of the lower mandible, and a darker gray mantle. [...] The bird was slightly larger than most of the Ring-billed Gulls, although one or two of the biggest Ring-billed Gulls were as large as the bird I was studying. Proportionately, the bird was heavier and larger-headed than a Ring-billed Gull. [...] I estimated the mantle color to be about midway between those of Ring-billed Gull and a Lesser Black-backed Gull. [...] The bill was heavier than the bill of a Ring-billed Gull and had a distinct gonys. The legs were pale gray-green, unlike the bright yellow legs of a Ring-billed Gull. Leg length appeared similar to a Ring-billed Gull. | The original documentation form event lasted from 07:45:00/09:27:00.
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Iowa Ornithologists' Union | MS 166
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11
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1
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Records Committee review for rare bird sighting of California Gull at Red Rock Lake, 1998
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1998-10-05
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2000-11-24
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Rare birds documentation form
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Records Committee review of a California Gull at Red Rock Lake in Marion County, IA on October 5 to November 4, 1998. Includes a record review document with votes and a documentation submitted to the committee.
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Brees, Aaron
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California Gull
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Lake Red Rock
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Red Rock, Marion Co.
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The documentation form by Aaron Brees is the only one submitted and forms the basis of this record. | Elimination of similar species: [...] - larger than Ring-billed Gulls [...] - smaller than Herring Gulls - all first year Herrings have 75-100% dark bills - Herrings are thicker, bulkier - California sits more buoyantly on the water with tail and wingtips sitting much higher off the water
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Iowa Ornithologists' Union | MS 166
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10
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18
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