Documents • Iowa State University • Avian Archives of Iowa Online

Title	Genres	Topics	Date (Start)	Date (End)	Type	Description	Creator/Author	Birds	Locations	Locality	Habitat	Remarks

Records Committee review for rare bird sighting for Iceland Gull at Lock and Dam 15 near Davenport, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-03-09	1993-07-17	Rare birds documentation form	Records Committee review for an Iceland Gull at Lock and Dam 15 near Davenport in Scott County, IA on March 9, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Iceland Gull	Lock and Dam 15	Lock 15 - just upstream - R.I. Co. Il. + Scott Co. IA.	Ice cake floating on Miss. R. - along shore just upstream from lock - urban area around River.	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. \| Elimination of similar species: Glaucous Gull - bird was too small, bill entirely black. Thayer's Gull - uniform color on entire wing. \| The original documentation form event lasted from 11:00:00/11:10:00.	Iowa Ornithologists' Union \| MS 166	11	4
Annotated bird sighting list, Fall 1980 compiled by Raymond L. Cummins	Field notes Surveys (documents)	Bird watching	1980-11-26	N/A	Manuscript, graphic, and printed material	An annotated bird sighting list for Fall from Raymond L. Cummins, dated November 26, 1980. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Cummins, Raymond L.	Swainson's Hawk Least Bittern Eared Grebe Surf Scoter Osprey Tundra Swan	Sunken Grove State Game Management Area Lizard Lake Rush Lake Lake Panorama				Iowa Ornithologists' Union \| MS 166	19	5
Bill Clark letter to Thomas Kent regarding additional details about his bird sightings in Iowa, October 23, 1980	Correspondence Field notes	Bird watching Birds--Identification Troglodytidae \| Wrens	1980-10-23	N/A	Manuscript, graphic, and printed material	Bill Clark follows up his previous letter from September 15, 1980 by providing additional details of his bird sightings at Union Slough, along with new sightings from Ledges State Park. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Clark, Bill	Broad-winged Hawk Great Crested Flycatcher Red-breasted Nuthatch	Ledges State Park Union Slough National Wildlife Refuge				Iowa Ornithologists' Union \| MS 166	19	5
Bill Clark letter to the Union Slough Refuge Manager regarding an early sighting of a Red-breasted Nuthatch, September 15, 1980	Correspondence Field notes	Bird watching Birds--Identification Wildlife managers	1980-09-15	N/A	Manuscript, graphic, and printed material	In this letter forwarded to Thomas Kent from the Refuge Manager, Bill Clark reports an early sighting of a Red-breasted Nuthatch along with other birds sighted at Union Slough. A copy of this report was also sent to Vernon Kleen. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Clark, Bill	Red-breasted Nuthatch	Union Slough National Wildlife Refuge				Iowa Ornithologists' Union \| MS 166	19	5
Tanya Bray letter to Thomas Kent regarding clarifications to her previous letter, December 4, 1980	Correspondence Field notes	Bird watching	1980-12-04	N/A	Manuscript, graphic, and printed material	Tanya Bray clarifies that in the bird sighting list sent with her letter dated November 30, 1980 it was Andy Saunders who reported seeing the Sandhill Cranes and that Cass and Mills refer to counties. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Bray, Tanya	Sandhill Crane	DeSoto National Wildlife Refuge				Iowa Ornithologists' Union \| MS 166	19	5
Tanya Bray letter to Thomas Kent regarding birds seen around the DeSoto Bend area, November 30, 1980	Correspondence Field notes	Bird watching Anseriformes \| Ducks, Geese, and Swans	1980-11-30	N/A	Manuscript, graphic, and printed material	Tanya Bray letter to Thomas Kent contains an annotated list of birds seen around DeSoto Bend and other areas of western Iowa during the fall of 1980. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Bray, Tanya	Purple Finch Snow Goose Green-winged Teal Sandhill Crane Mallard	Forneys Lake State Wildlife Management Area Mills County DeSoto National Wildlife Refuge Omaha				Iowa Ornithologists' Union \| MS 166	19	5
Birds: verifying documentation of an extraordinary sight record, Dick Bierman, October 3, 1980	Field notes Forms (documents)	Bird watching Birds--Identification Rare birds	1980-10-03	N/A	Manuscript, graphic, and printed material	Dick Bierman documents the sighting of a Merlin in Cherokee County. He previously documented a Merlin sighting in the Fall of 1977. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Bierman, Dick	Merlin	Spring Township				Iowa Ornithologists' Union \| MS 166	19	5
Dick Bierman letter to Thomas Kent regarding fall field report for 1980, December 3, 1980	Correspondence Field notes	Bird watching Birds--Migration	1980-12-03	N/A	Manuscript, graphic, and printed material	Dick Bierman letter to Thomas Kent contains a list of birds seen mostly around the Cherokee area during the fall of 1980 and recommends which birds should be reported with a documentation form. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of Fall 1980.	Bierman, Dick	Red-headed Woodpecker Red-tailed Hawk Horned Grebe Eastern Bluebird Chimney Swift American White Pelican Brown Thrasher Merlin Osprey Stilt Sandpiper Common Nighthawk Red-breasted Nuthatch Golden-crowned Kinglet Cliff Swallow	Cherokee County Cherokee Battle Creek				Iowa Ornithologists' Union \| MS 166	19	5
Field notes contributed by Gladys Black, November 21 1980	Correspondence Field notes	Bird watching Migratory birds Turdidae \| Thrushes	1980-11-21	N/A	Manuscript, graphic, and printed material	Field notes contributed by Gladys Black listing birds seen around the Red Rock area during the fall of 1980. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of fall 1980.	Black, Gladys	Red-tailed Hawk Double-crested Cormorant Turkey Vulture Evening Grosbeak Peregrine Falcon Caspian Tern Northern Mockingbird Pine Siskin Great Blue Heron Bonaparte's Gull Great Egret	Lake Red Rock Pleasantville Knoxville				Iowa Ornithologists' Union \| MS 166	19	5
Records Committee review for rare bird sighting of Iceland Gull at Lock and Dam 14 near Le Claire, 1992	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1992-01-04	1994-10-18	Rare birds documentation form	Records Committee review for two Iceland Gulls at Lock and Dam 14 near Le Claire in Scott County, IA on January 4, 1992. Includes a record review document with votes, two photographs, an article in Iowa Bird Life, and two documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Iceland Gull	Lock and Dam 14	Lock and Dam 14, Scott Co. Iowa	Mississippi River	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Another documentation form by Peter C. Petersen was submitted later. Other observers include Dan Dorrance and many unidentified observers. \| Elimination of similar species: The overall size, head size, bill size, and lack of dipped-in-ink effect on the bill tip exclude Glaucous Gull. I excluded Thayer's Gull because both of these birds had very light primaries (not dark webs on the outer primaries). Neither had a secondary bar or in fact any distinctive marking on the wings. The lack of tail band in the first year bird also excludes Thayer's Gull. I was impressed by the paleness of the gray mantle in the second-year bird, but have too little experience with older Thayer's Gulls to make a comparison. \| The original documentation form event lasted from 11:30:00/12:30:00.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Iceland Gull at Lock and Dam 14, 1992	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1992-01-04	1994-10-18	Rare birds documentation form	Records Committee review for two Iceland Gulls at Lock and Dam 14 in Scott County, IA on January 4, 1992. Includes a record review document with votes, an Iowa Bird Life article, four photographs, and seven documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Iceland Gull	Lock and Dam 14	Lock and Dam 14, Scott Co. Iowa	Mississippi River	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Other documentation forms by Robert Cecil, James Fuller, Ann Johnson, Peter C. Petersen, Raymond Cummins, Randall Pinkston were submitted later. Other observers include Beth Brown, Dan Dorrance, Ross Silcock, Tanya Bray, Pete Wickham, Tim Schantz, and many unidentified observers. \| Elimination of similar species: The overall size, head size, bill size, and lack of dipped-in-ink effect on the bill tip exclude Glaucous Gull. I excluded Thayer's Gull because both of these birds had very light primaries (not dark webs on the outer primaries). Neither had a secondary bar or in fact any distinctive marking on the wings. The lack of tail band in the first year bird also excludes Thayer's Gull. I was impressed by the paleness of the gray mantle in the second-year bird, but have too little experience with older Thayer's Gulls to make a comparison. \| The original documentation form event lasted from 11:30:00/12:30:00.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Iceland Gull at Lock and Dam 14 near Le Claire, 1991	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-31	1993-07-17	Rare birds documentation form	Records Committee review for an Iceland Gull at Lock and Dam 14 near Le Claire in Scott County, IA on December 31, 1991. Includes a record review document with votes, an article in Iowa Bird Life, and two documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Iceland Gull	Lock and Dam 14	Lock and Dam 14, Scott Co., IA	Mississippi River	The documentation form by Thomas H. Kent 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 Pete Wickham, John Daniel, Chuck Fuller, Bill Dawes, and John Rutenbeck. \| Elimination of similar species: At first I thought the bird might be a Glaucous Gull, but the all black bill quickly excluded that possibility. Later I confirmed that the bird was smaller than Herrings and had a bill that was too small and too short for a Glaucous. I believe that the tail band also argues against Glaucous. I next considered Thayer's Gull, but decided that the tail band was not extensive enough, that there was no secondary bar, that the wing tips were too light (both in flight and on the standing bird), and that the tertials were not dark enough on the standing bird. All of the findings were a good fit for first-winter Iceland Gull. \| The original documentation form event lasted from 13:15:00/13:35:00 on December 31, 1991 and 08:55:00/10:20:00 on January 1, 1992.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Iceland Gull at Red Rock Reservoir Dam, 1991	Administrative records Clippings (information artifacts) Correspondence Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1991-03-13	1993-07-17	Rare birds documentation form	Records Committee review for an Iceland Gull at Red Rock Reservoir Dam in Marion County, IA on March 13, 1991. Includes a record review document with votes, seven photographs, an article in Iowa Bird Life, correspondence about bird sighting and review, and eleven documentation forms submitted to the committee.	Schantz, Tim	Iceland Gull	Red Rock Dam	Below Red Rock Dam, Marion County, Iowa		The documentation form by Tim Schantz is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Ann Johnson, Thomas H. Kent, Diane Porter, Jim Sinclair, Stephen Dinsmore, James Dinsmore, Beth Proescholdt, and Mark Proescholdt were submitted later. Other observers include Dawn DeVore, Dick Tetrault, Jim Scheib, Beth Brown, Michael Porter, Eugene Armstrong, Eloise Armstrong, and many unidentified observers. \| Elimination of similar species: [...] Iowa Birds mentions that there is a problem separating Iceland with Thayers. If there was any problem with this bird being anything it was a Glaucous Gull of the same age. However the bird was smaller than the Herring Gulls that were on the roost. Long wings will rule out the rare small race of Glaucous Gull. There are not to [sic] many birds that have primaries lighter than the mantle in the sitting bird.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 at Keokuk, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-02-16	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 19 at Keokuk in Lee County, IA on February 16, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Allen, Reid I.	Thayer's Gull	Lock Number 19	Lock & Dam #19 - Keokuk, Iowa	River channel with open water below dam extending 3/4 mile from dam	The documentation form by Reid Allen is the only one submitted and forms the basis of this record. Other observers include Pam Allen, Eugene Armstrong, and Eloise Armstrong. \| Elimination of similar species: First-winter Herring gulls (many were present) had blackish wingtips. Juvenile Iceland gull wingtips lack dark edging on primaries as do those on Glaucous-winged Gull. \| The original documentation form event lasted from approximately 10:30:00/10:50:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records committee review for rare bird sighting of Iceland Gull at Campbell's Island in East Moline, 1974	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1974-12-02	1993-09-03	Rare birds documentation form	Records Committee review for an Iceland Gull at Campbell's Island in East Moline in Rock Island County, IL on December 2, 1974. Includes record review documents with votes, an article in Iowa Bird Life, summary of the review, and two documentation forms submitted to the committee.	Fawks, Elton	Iceland Gull	Campbells Island	From my residence, Campbell's Island, East Moline, Ill. 3 miles downstream from Lock & Dam 14, Mississippi River	First seen at mouth of Honey Creek, flowing into Miss. R.	The documentation form by Elton Fawks forms the basis of this record. Another documentation form by Ernie Salder was submitted. Other observer includes Mark Henderson and unidentified individuals on a Christmas Bird Count. \| Elimination of similar species: Glaucous Gull \| The original documentation form event lasted from 11:00:00/12:00:00.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Iceland Gull near Le Claire, 1985	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1985-12-27	1993-09-03	Rare birds documentation form	Records Committee review for a Iceland Gull near Le Claire in Scott County, IA on December 27, 1985. Includes a record review document with votes and two documentations submitted to the committee.	Brogie, Mark A. Wickham, Peter P.	Iceland Gull	Le Claire	[...] along the Mississippi River approximately one-half mile north of the Interstate 80 bridge in Scott County, Iowa.		The documentation form by Mark Brogie and Peter P. Wickham forms the basis of this record. Another documentation form by Paul Martsching was submitted. Another observer includes Steve Dinsmore. \| Elimination of similar species: [...] The bird was in the company of several Herring Gulls (Larus argentatus) and three subadult Glaucous Gulls (Larus hyperboreus). Two of the Glaucous Gulls were light plumaged birds lacking a gray mantle and, since eye color was not noted, may have been either first or early second winter birds. The third Glaucous was quite buffy and was undoubtably [sic] a first winter bird. The Iceland Gull was first observed being chased by a light-phased Glaucous and was distinctly smaller and lighter colored. It also flew with a faster wingbeat and had a more buoyant flight than that of the larger bird. Glaucous Gulls were also observed chasing Herring Gulls but at no time was intraspecific chasing observed. During several instances two Glaucous Gulls were observed resting on the water or sitting on the ice together, but the Iceland always remained isolated from these birds. At one point the Iceland Gull circled overhead at a distance of approximately 40 yards in the company of a light-phased Glaucous and an immature Herring Gull, and characteristics between the species were well noted. The plumage of the Iceland was wholly white with a faint buffy tinge, yet distinctly whiter than the Glaucous Gull. The size difference between the Glaucous and the other two species was apparent as the Iceland and Herring were of approximately equal size. The head and bill of the Iceland Gull appeared less robust in shape than the Glaucous although both species had a bicolored bill with a flesh colored base and dark tip. [...] The brown barring of the undertail coverts of the Iceland appeared heavier and more noticable [sic] than in its white-winged congeneric counterpart, and contrasted particularly with the whitish tail. \| The original documentation form event lasted for approximately twenty minutes.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Iceland Gull near Lock and Dam 15 near Davenport, 1985	Administrative records Clippings (information artifacts) Correspondence Field notes Tables (documents)	Bird watching Ornithology Ornithology--Societies, etc	1985-12-22	1993-09-03	Rare birds documentation form	Records Committee review for a Iceland Gull near Lock and Dam 15 near Davenport in Scott County, IA on December 22, 1985. Includes record review documents with votes, articles in Illinois Birds and Birding as well as American Birds, correspondence about the bird sighting, and four documentation forms submitted to the committee.	Petersen, Peter C.	Iceland Gull	Lock and Dam 15	Location: Davenport. County: Scott	General: Chanel [sic] of Miss. R., near middle of river when standing. Specific: 1/2 - 3/4 mi. above Lock + Dam 15.	The documentation form by Peter C. Petersen forms the basis of this record. Other documentation forms by Ann Barker, Mary Lou Petersen, and Bill Barker were submitted. Other observers include Steve Dinsmore, Paul Martsching, Pete Wickham, Mark Brogie, Lewis Blevins, Corey Blevins, Brett Ashford, and Dale Dickinson. \| Elimination of similar species: Glaucous Gull eliminated by size, wing extention [sic] well beyond tail. Flight, headshape, all emphasized by direct comparison with Glaucous Gulls. The next afternoon Bill Barker compared this bird to two different sized Glaucous Gulls and it was smaller than the smaller Glaucous Gull. Plumage lighter than Glaucous also. \| The original documentation form event lasted from 11:40:00/12:10:00.	Iowa Ornithologists' Union \| MS 166	11	4
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 near Davenport, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-31	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 31, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Thayer's Gull	Lock and Dam 15	Lock + Dam 15, Davenport, Scott Co., IA	Mississippi River	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: Translucent flight feathers and upper wing pattern and lighter tail band separate from Herring Gull \| The original documentation form event lasted from 14:30:00/14:35:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 13, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-28	1993-07-17	Rare birds documentation form	Records Committee review for two Thayer's Gulls at Lock and Dam 13 in Clinton County, IA on December 28, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Blevins, Brian L.	Thayer's Gull	Lock and Dam 13	Lock + Dam 13 on Mississippi River	Mississippi River Flyway just Below the Dam	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins, Lewis Blevins, and Jennifer Anderson. \| Elimination of similar species: Herring Gull -> eliminated by the light brown color continuous all the way throughout the wingtips, thus there was not a darkening towards the wing tips. The mantle was also lighter than those of the nearby Herring Gulls. \| The original documentation form event lasted from 14:30:00/14:50:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 near Davenport, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-15	1993-07-17	Rare birds documentation form	Records Committee review for two Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 15, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Blevins, Brian L.	Thayer's Gull	Lock and Dam 15	Lock + Dam 15 on Mississippi River	Mississippi River Flyway just below the Dam	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins, Lewis Blevins, and Peter C. Petersen. \| Elimination of similar species: Herring Gull -> Immature - eliminated by the light brown color continuous all the way throughout the wingtips, thus there was not a darkening towards the wing tips. Adult - eliminated by the light mantle getting lighter towards the wingtips, with just a few grey spots on the primaries. \| The original documentation form event lasted from 15:15:00/15:45:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-07	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on December 7, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Thayer's Gull	Red Rock Dam	Red Rock Res., Marion Co., IA	below dam on river	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include around twenty unidentified observers on IOU field trip. \| Elimination of similar species: Much lighter and more uniform than 1st winter Herring Gulls flying in area. \| The original documentation form event lasted from 08:00:00/09:00:00.	Iowa Ornithologists' Union \| MS 166	11	3
Record Committee review for rare bird sighting of Thayer's Gull at Gray's Lake, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-11-30	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Gray's Lake in Polk County, IA on November 30, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Cecil, Robert I.	Thayer's Gull	Grays Lake	Gray's Lake, Des Moines, Polk County, IA	Lake with some open water	The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. Another observer includes Mary Michelle Cecil. \| Elimination of similar species: Herring much more "contrasty", including dark secondary bar, dark tail band, very dark towards ends of primaries. This bird was smaller than 1st wither [sic] Herring, as well as paler brown. \| The original documentation form event lasted from 10:30:00/11:00:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-11-25	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 25, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.	Johnson, Ann	Thayer's Gull	Red Rock Dam	Below dam, Red Rock Reservoir, Marion Co., IA	Gravel bar and open river	The documentation form by Ann Johnson forms the basis of this record. Another documentation form by Thomas H. Kent was submitted. Other observers include Jim Fuller, Dick Tetrault, and Tim Schantz. \| Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, pale gray primaries, secondaries and tailband, lack of a window from above, and lack of any color to the underside of the primaries. The bird certainly had the overall coloration of a first year Iceland Gull. However, Iceland Gull was eliminated based on the darker secondaries, complete gray tail band, and the darker webs to the outer primaries from above. \| The original documentation form event lasted from 16:10:00/16:50:00 on November 25, 1991 and 13:50:00/14:05:00 on November 28, 1991.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-10-24	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on October 24, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	Red Rock Dam	Below dam, Red Rock Reservoir, Marion Co., IA	Gravel bar and open river	The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, brown as opposed to blackish primaries and tail band, lack of a window from above, and lack of any color to the underside of the primaries. Iceland Gull was eliminated based on the darker secondaries and wide, brown tail band. \| The original documentation form event lasted from 16:50:00/17:15:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Reservoir Dam, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-03-14	1993-07-17	Rare birds documentation form	Records Committee review for two Thayer's Gulls at Red Rock Reservoir Dam in Marion County, IA on March 14, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.	Johnson, Ann	Thayer's Gull	Red Rock Dam	Below dam, Red Rock Reservoir, Marion Co., IA	Gravel bar and open river	The documentation form by Ann Johnson is the one that forms the basis of this record. Another documentation form by Diane Porter was submitted. Other observers include Beth Brown and Tim Schantz. \| Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, brown as opposed to blackish primaries and tail band, bill and head structure, and lack of any color to the underside of the primaries. Iceland Gull was eliminated based on the darker secondaries and wide, brown tail band. \| The original documentation form event lasted from 10:20:00/10:40:00.	Iowa Ornithologists' Union \| MS 166	11	3