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

Rare bird documentation form for Thayer's Gull at Lock and Dam 15 in Davenport, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-17	1992-01-19	Rare birds documentation form	Rare bird documentation form for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on January 17, 1992.	Cecil, Robert I.	Thayer's Gull	Lock and Dam 15	Lock and Dam 15, Davenport, Iowa. Rusty Pelican Restaurant	River	The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. \| Elimination of similar species: See above discussion. [...] The wingtip pattern is what caught my attention. There was much less darkening to the outer primaries than on accompanying gulls. [...] When viewed fro [sic] underneath, the wingtips of the subject bird were white to the tips, with the exception of very narrow black tips at the tips of the primaries. This was very different from the adult Herring/Ring-bills which had substantial black towards the end of the underwings. \| The original documentation form event lasted from 10:30:00/10:45:00.	Iowa Ornithologists' Union \| MS 166	34	35
Rare bird documentation form for Lesser Black-backed Gull at Lock and Dam 15, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-17	N/A	Rare birds documentation form	Rare bird documentation form for a Lesser Black-backed Gull at Lock and Dam 15 in Davenport in Scott County, IA on January 17, 1992.	Kent, Thomas H. (Thomas Hugh), 1934-	Lesser Black-backed Gull	Lock and Dam 15	Above Lock + Dam 15, Davenport, IA	Frozen river	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Jim Fuller. \| Elimination of similar species: Size and leg color eliminate other dark mantled gulls. \| The original documentation form event lasted from 13:30:00/14:30:00.	Iowa Ornithologists' Union \| MS 166	34	36
Records Committee review for rare bird sighting for Pine Warbler at Pleasantville, 1992	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1992-01-12	1994-10-18	Rare birds documentation form	Records Committee review for a Pine Warbler at Pleasantville in Marion County, IA on January 12, 1992. Includes a record review document with votes, an Iowa Bird Life article and cover page, a photograph, and three documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Pine Warbler	Pleasantville	Gladys Black's feeder, Pleasantville, IA	small town	The documentation form by Thomas Kent is the earliest and the one that forms the basis of this record. Other documentation forms by Mark Proescholdt and Ann Johnson were submitted later. Other observers include Gladys Black, Tim Schantz, Pam Allen, Reid Allen, and unidentified other observers. \| Elimination of similar species: The thin bill was not that of a vireo. The bird was too large and elongated for a kinglet. Orange-crowned Warbler does not have wing bars or as bright a yellow color on breast. Also too yellow for the much less likely Bay-breasted or Blackpoll Warblers. \| The original documentation form event lasted from 08:30:00Z/08:33:00Z.	Iowa Ornithologists' Union \| MS 166	13	20
Rare bird documentation form for Lesser Black-backed Gull at Mississippi River between Bettendorf, IA and Moline, IL, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-11	N/A	Rare birds documentation form	Rare bird documentation form for a Lesser Black-backed Gull at Mississippi River between Bettendorf in Scott County, IA and Moline in Rock Island County, IL on January 11, 1992.	Petersen, Peter C.	Lesser Black-backed Gull	Bettendorf Moline	Miss. R. between Bettendorf + Moline, Scott + R.I. Cos.	river channel	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. \| Elimination of similar species: Great Black-backed - back not black, too small. Slaty-backed - a bit small, trailing edge of wing with narrow, not wide, white edge. Western - a bit small bill not larger + heavier than the several nearby Herrings. \| The original documentation form event lasted from 08:50:00/09:00:00.	Iowa Ornithologists' Union \| MS 166	34	36
Details for unusual bird sighting, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-09	1992-01-17	Manuscript, graphic, and printed material	Rare bird sighting for a Thayer's Gull by Jim Fuller at Lock and Dam 15 near Davenport in Scott County, IA on January 9, 13, and 17, 1992.	Fuller, James L	Thayer's Gull	Lock and Dam 15				Iowa Ornithologists' Union \| MS 166	34	35
Details for Glaucous Gull at Lock and Dam 14 in Davenport in 1992	Field notes	Birds--Identification Ornithology Rare birds Wildlife conservation	1992-01-05	N/A	Manuscript, graphic, and printed material	Field notes by Jim Fuller for a Glaucous Gull at Lock and Dam 14 in Davenport on January 5, 1992.	Fuller, James L	Glaucous Gull	Lock and Dam 14				Iowa Ornithologists' Union \| MS 166	34	37
Rare bird documentation form for Lesser Black-backed Gull at Cedar Lake, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-05	N/A	Rare birds documentation form	Rare bird documentation form for a Lesser Black-backed Gull at Cedar Lake in Linn County, IA on January 5, 1992.	Kent, Thomas H. (Thomas Hugh), 1934-	Lesser Black-backed Gull	Cedar Lake	Cedar Lake, Linn Co., Iowa	backwater lake and cooling pond with some ice	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: The leg color and size eliminate other dark mantled gulls. \| The original documentation form event lasted from 09:50:00/10:00:00 and 10:30:00.	Iowa Ornithologists' Union \| MS 166	34	36
Details for rare bird sighting, Jim Fuller, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-01-05	N/A	Manuscript, graphic, and printed material	Field report for sighting of a Lesser Black-backed Gull at Lock and Dam 14 and at Moline Riverfront on January 5, 1992, contributed by Jim Fuller. Other observers include Jane Fuller and Carol Thompson.	Fuller, James L	Lesser Black-backed Gull	Lock and Dam 14 Moline				Iowa Ornithologists' Union \| MS 166	34	36
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, 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 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 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
Rare bird documentation form for Tundra Swan at Princeton Marsh, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-12-19	1992-01-09	Rare birds documentation form	Rare bird documentation form for two Tundra Swans at Princeton Marsh in Scott County, IA on December 19, 1991.	Barker, Ann M.	Tundra Swan	Princeton State Wildlife Management Area	Princeton Marsh 3/4 mi N of pumping station on dike	Patch of open water surrounded by ice - river backwater	The documentation form by Ann M. Barker is the only one submitted and forms the basis of this record. Other observers include Don Moeller, Diann Huysinger, and Bernie Carpenter. \| Elimination of similar species: Trumpeter Swan - immature had definite pink at base of bill, Trumpeter immature would show black at base. Both were seen straight on; white of forehead at base of bill appeared to come down between the eyes, unlike the Trumpeter, whose bill appears more straight across between the eyes. Black of bill did not include the eye as it would in Trumpeter. Mute Swan - birds in question had no knob at base of bill and necks were held straight rather than curved. Secondaries not raised. \| The original documentation form event lasted from 10:00:00/10:15:00.	Iowa Ornithologists' Union \| MS 166	33	1
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 Swainson's Hawk at Stone Park, 1991	Administrative reports Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1991-12-14	1993-07-17	Rare birds documentation form	Records Committee review of a Swainson's Hawk at Stone Park in Plymouth County, IA on December 14, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Williams, Randall D.	Swainson's Hawk	Stone State Park	1 mile north of west entrance to Stone State Park on highway 12	hovering above loess bluff; overlooking Big Sioux River Floodplain	The documentation form by Randall D. Williams is the earliest and the one that forms the basis of this record. Other observers include Mike Franken. \| Elimination of similar species: Red-tailed Hawk: wings held flat when soaring; presence of red tail patagial patches present, no bib. Rough-legged Hawk: dark belly-band or girdle. carpal wing patches present. Dark band on trailing edge of wing (immature). \| The original documentation form event lasted from 14:00:00/14:30:00.	Iowa Ornithologists' Union \| MS 166	8	32
Records Committee review for rare bird sighting of Gyrfalcon north of Cambridge, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-14	1993-07-17	Rare birds documentation form	Records Committee review of a Gyrfalcon north of Cambridge in Story County, IA on December 14, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Cook, Barnett C.	Gyrfalcon	Cambridge	2 mi north of Cambridge, Story County	open	The documentation form by Barney Cook is the only one submitted and forms the basis of this record. Other observers include Fritz Franzen and Stu Huntington. \| The original documentation form event occurred around 15:00:00.	Iowa Ornithologists' Union \| MS 166	9	4
Records Committee review for rare bird sighting of Marbled Murrelet at Whitebreast Cove at Red Rock Reservoir, 1991	Administrative records Clippings (information artifacts) Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-12	1993-07-17	Rare birds documentation form	Records Committee review for a Marbled Murrelet at Whitebreast Cove at Red Rock Reservoir in Marion County, IA on December 12, 1991. Includes a record review document with votes, field notes, an article in Iowa Bird Life, correspondence relevant to bird sighting and review, and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Marbled Murrelet	Whitebreast Recreation Area	Red Rock Reservoir, Marion Co.-off Whitebreast Cove	large patch of open water on reservoir	The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Another observer was Brian Warson. \| Elimination of similar species: The bird was clearly an alcid. The small size rules out the murres, Razorbill, and guillemots (see earlier discussion). The long, thin bill eliminates Dovekie, Ancient Murrelet, and all of the auklets. The bill shape, dark cap that included the eye, and presence of two white patches on each side eliminates all other murrelets, especially Kittlitz's. \| The original documentation form event lasted from 15:15:00/15:24:00.	Iowa Ornithologists' Union \| MS 166	12	5
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
Rare bird documentation form for Trumpeter Swan at Mississippi River in Davenport, 1991	Field notes Forms (documents)	Birds--Identification Ornithology Rare birds	1991-12-06	1991-12-29	Rare birds documentation form	Rare bird documentation form for three Trumpeter Swans at Mississippi River near Enchanted Island in Davenport in Scott County, IA on December 6, 1991.	Petersen, Peter C.	Trumpeter Swan	Horse Island	Miss. River along S. Concord St. near Enchanted Island on Davenport, IA	Miss River + adjacent shore	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Kelly McKay, Weir Nelson, Jim Durbin, Joyce Durbin, and Dawn Fisher. \| Elimination of similar species: Tundra Swan - would have yellow area between eye & bill. In addition these birds were marked & from a known Trumpeter population. \| The original documentation form event occurred in various times.	Iowa Ornithologists' Union \| MS 166	32	30
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 Lesser Black-backed Gull at Coralville Reservoir, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-11-28	1993-07-17	Rare birds documentation form	Records Committee for a Lesser Black-backed Gull at Coralville Reservoir in Johnson County, IA on November 28, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Lesser Black-backed Gull	Coralville Lake	Coralville Reservoir, Johnson Co., IA.	Reservoir mostly ice-covered. Gulls around small patch of open water.	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Jim Fuller was another observer. \| Elimination of similar species: The size, wing and mantle color and yellow legs exclude other species, except perhaps for the most unlikely Yellow-footed Gull, which should be larger. \| The original documentation form event lasted from 08:45:00/09:00:00.	Iowa Ornithologists' Union \| MS 166	11	5
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
Rare bird documentation form for Black-legged Kittiwake at Pleasant Creek State Recreation Area, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-11-16	1991-11-19	Rare birds documentation form	Rare bird documentation form for a Black-legged Kittiwake at Pleasant Creek State Recreation Area in Linn County, IA on November 16, 1991.	Proescholdt, Mark	Black-legged Kittiwake	Pleasant Creek State Park	Pleasant Creek State Recreation Area - (Linn Co.)	artificial medium-sized lake	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt and many other observers. \| Elimination of similar species: A Bonaparte's Gull lacks the black bar on its nape and does not have as much black in its wings. \| The original documentation form event lasted from 14:25:00/14:40:00 and 16:00:00/16:20:00 approximately.	Iowa Ornithologists' Union \| MS 166	34	40
Rare bird documentation form for Prairie Falcon south of Saylorville Reservoir, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-11-10	1991-11-12	Rare birds documentation form	Rare bird documentation form for a Prairie Falcon south of Saylorville Reservoir in Polk County, IA on November 10, 1991.	Cecil, Robert I.	Prairie Falcon	Saylorville Lake	1/2 mile S. of Highway 17 bridge at Sailorville [sic] Res., Polk Co.	Ag. land interspersed with woodlots.	The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. Other observers include Sue Spieker. \| Elimination of similar species: Narrow, uniform width mustache, streaked crown, and dark axilaries [sic] eliminate Peregrine. Size eliminates Merlin. \| The original documentation form event lasted from 09:45:00/09:50:00.	Iowa Ornithologists' Union \| MS 166	33	35