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 Northern Goshawk at Red Rock Reservoir, 1984	Field notes	Birds--Identification Ornithology--Societies, etc Rare birds	1984-03-18	1984-03-22	Rare birds documentation form	Rare bird documentation form for a Northern Goshawk at Red Rock Reservoir in Marion County, IA on March 18, 1984.	Thompson, Dennis	Northern Goshawk	Lake Red Rock	North edge of Red Rock Res. Marion County	Pinegrove of 4 or 5 acres on north side of Red Rock Res. Thick grove of pines 30-40 ft. tall.	The documentation form by Dennis Thompson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Much larger than Cooper's or Sharp-shinned. Silver-gray coloration eliminated buteos. \| The original documentation form event lasted from 13:00:00/13:05:00 approximately.	Iowa Ornithologists' Union \| MS 166	33	25
Field notes and Peter C. Petersen letter to James J. Dinsmore regarding the fall report and bird sightings, summer 1985	Correspondence Field notes	Bird watching Birds--Nests Ornithology--Societies, etc Birds--Infancy	1985-06-01	1985-07-31	Manuscript, graphic, and printed material	Field notes contributed by Peter C. Petersen in a letter to James J. Dinsmore with observers Mary Lou Petersen and Corey Blavins. A detailed list of birds and locations is included with the letter. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of summer 1985.	Petersen, Peter C.	Broad-winged Hawk Blue-gray Gnatcatcher Orchard Oriole Purple Finch Hooded Merganser Semipalmated Plover Baird's Sandpiper Caspian Tern Acadian Flycatcher Northern Mockingbird Prothonotary Warbler Pine Siskin Blackburnian Warbler Black Tern	Blue Grass Credit Island Davenport Le Claire Pilot Knob State Park Wildcat Den State Park Fairmont Cemetery Walnut Woods State Park Big Sand Mound Nature Preserve				Iowa Ornithologists' Union \| MS 166	21	7
Two letters sent between Rushton G. Cortelyou and Thomas H. Kent, regarding a Piping Plover sighting, July 1986	Correspondence Field notes	Birds--Identification Birds--Nests Ornithology--Methodology Ornithology--Societies, etc Rare birds	1986-05-28	1986-07-12	Manuscript, graphic, and printed material	Rushton G. Cortelyou letter to Thomas Kent, July 10, 1986, regarding a Piping Plover nest at the MidAmerican Energy Settling Ponds near Council Bluffs, IA on May 28, 1986. There is a response from Kent about Piping Plover sightings as well as how Nebraska ornithologists should report Iowa bird sightings dated July 12, 1986.	Green, Ruth Cortelyou, Rushton G.	Piping Plover	MidAmerican Energy Ponds				Iowa Ornithologists' Union \| MS 166	34	5
Field notes contributed by James P. Sandrock, Fall 1987	Field notes	Birds--Identification Ornithology Ornithology--Societies, etc Rare birds	1987-07-07	1987-07-19	Manuscript, graphic, and printed material	Field notes contributed by James P. Sandrock, Fall 1987.The notes give details for the sightings of a King Rail, Black-bellied Plovers, Gray Partridges, and Eastern Screech Owls from July 7 to July 19, 1987.	Sandrock, James P., 1929-	Gray Partridge Black-bellied Plover King Rail Eastern Screech-Owl	Maquoketa Birmingham Kalona				Iowa Ornithologists' Union \| MS 166	33	41
Christmas bird count data report and W. Ross Silcock note to Thomas H. Kent, winter 1987-1988	Correspondence Field notes	Birds--Research Ornithology--Methodology Ornithology--Societies, etc	1987-12-01	1988-02-28	Manuscript, graphic, and printed material	Christmas bird count data report compiled by W. Ross Silcock includes species count totals by county, suggested report format changes and a compilation of species observed and recorded as "write-ins." This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of winter 1987-1988.	Silcock, W. Ross		Iowa				Iowa Ornithologists' Union \| MS 166	23	4
Neil Bernstein letter to James J. Dinsmore regarding personal papers, summer 1988	Correspondence Field notes	Bird watching Birds--Research Ornithology--Societies, etc	1988-06-01	1988-07-31	Manuscript, graphic, and printed material	Neil Bernstein is interested in Jim's personal papers regarding photography measurement studies and species population wetland studies. The letter also includes bird sightings. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of summer 1988.	Bernstein, Neil	American White Pelican Black-crowned Night Heron American Coot	Dan Green Slough Wildlife Management Area Jemmerson Slough Wildlife Management Area Rush Lake				Iowa Ornithologists' Union \| MS 166	23	6
Rathbun Christmas Count - December 19, 1998	Field notes	Birds--Identification Ornithology--Societies, etc Rare birds	1988-12-19	1988-12-20	Manuscript, graphic, and printed material	Details for several rare species seen at the Christmas Bird Count including Black-bellied Plover at Rathbun Lake in Appanoose County, IA on December 19, 1998, documented by Bill Heusinkveld.	Heusinkveld, Bill	Blue-winged Teal Red-breasted Merganser Trumpeter Swan Black-bellied Plover Yellow-rumped Warbler Bonaparte's Gull	Rathbun Lake				Iowa Ornithologists' Union \| MS 166	34	2
Iowa Ornithologists' Union, Quarterly field report, fall 1991	Field notes	Bird watching Birds--Research Ornithology--Societies, etc Weather	1991-08-01	1991-11-30	Manuscript, graphic, and printed material	Quarterly field report for the fall of 1991 titled "Field Reports - fall 1991."	Kent, Thomas H. (Thomas Hugh), 1934- Iowa Ornithologists' Union Bendorf, Carl J. Fuller, James L	Mississippi Kite Thayer's Gull Common Ground-Dove Pacific Loon Red Phalarope Lesser Black-backed Gull Sabine's Gull Western Wood-Pewee Eurasian Tree Sparrow Laughing Gull	Iowa				Iowa Ornithologists' Union \| MS 166	24	7
Rare bird documentation form for Surf Scoter at Davenport, 1992	Field notes	Birds--Identification Ornithology--Societies, etc Rare birds	1992-12-20	1993-01-10	Rare birds documentation form	Rare bird documentation form for a Surf Scoter at Davenport in Scott County, IA on December 20, 1992.	Sowl, LeRoy W.	Surf Scoter	Davenport	I-280 Bridge, Davenport, IA	Miss. River	The documentation form by LeRoy W. Sowl is the only one submitted and forms the basis of this record. Other observers include Bob Bryant and Dan Dorrance. \| Elimination of similar species: other scoters No white wing patch, front white facial patch had a vertical orientation and more bare bill was showing than on a white-wing. It did not have the facial pattern of a Black Scoter. Bill did not have the bump. Head not round like Black Scoter. \| The original documentation form event lasted from 10:30:00/11:30:00.	Iowa Ornithologists' Union \| MS 166	33	11
Records Committee review for rare bird sighting of Ferruginous Hawk east of Osage, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-03-13	1993-03-16	Rare birds documentation form	Records Committee review of a Ferruginous Hawk east of Osage in Mitchell County, IA on March 13, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Hartogh, Mary Jo	Ferruginous Hawk	Osage	9 mi. E of Osage along a gravel road-Mitchell Co.	Hayfield near a road	The documentation form by Mary Jo Hartogh is the only one submitted and forms the basis of this record. Other observers include John Hartogh and Annjean Hartogh. \| Elimination of similar species: Compared it with a bald eagle and red-tailed hawk which does not have large reddish patches where the legs would be held in flight, nor the outline inside the wings in the same color. A red-tail might have one or the other white, but not both tail and head in my experience. Also the red-tail usually has a darker shade of brown on its middle belly, if it has color there. The rough-legged has a dark tail band which at that proximity should have been seen and its color is also a darker brown. \| The original documentation form event lasted from 08:25:00/08:26:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Mississippi Kite at Coralville Reservoir, 1990	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-05-19	1993-07-17	Rare birds documentation form	Records Committee review of a Mississippi Kite at Coralville Reservoir in Johnson County, IA on May 19, 1990. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Mississippi Kite	Babcock Access	Coraville Reservoir, Babcock Access, Johnson Co., IA	wide part of reservoir with open mud flats	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. \| Elimination of similar species: The pointed wings indicate a kite or falcon. The gliding flight was that of a kite not a falcon. The white body and head also eliminates all falcons. The lack of white rump as well as the flight pattern eliminate Northern Harrier. Swallow-tailed Kite would have a forked tail and different flight pattern. Black-shouldered Kite has a white and black shoulder. The lack of white patches in the secondaries and brownish tail indicate a subadult (first year bird). I looked for bands in the tail, but could not appreciate them. Failure to see bands could be due to the lighting and distance or, as noted by Clark and Wheeler, to the fact that "A few immatures have solid, unbanded dark brown tails." The prominent light and dark underwing puzzled me, but Dunne says that "Immature has body and underwing coverts buffy, with dark streaking and spotting of variable density; may be lighter or darker than illustrated." The underwing coverts and body appeared about the same shade to me. The lighting and distance may have precluded my appreciating any streaking. This bird appeared lighter than the bird I saw at Dudgeon Lake last year, especially the underwing coverts. The profile and flight characteristics allowed me to immediately recognize the bird as a Mississippi Kite. \| The original documentation form event lasted from 13:35:00/13:36:00.	Iowa Ornithologists' Union \| MS 166	8	26
Records Committee review for rare bird sighting of Mississippi Kite at Hickory Hill Park, 1990	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1990-06-24	1993-07-17	Rare birds documentation form	Records Committee review of a Mississippi Kite at Hickory Hill Park in Johnson County, IA on June 24, 1990. Includes one record review document with votes and a documentation form.	Schulein, Thomas M., 1945-	Mississippi Kite	Hickory Hill Park	Hickory Hill Park, Iowa City	Woodland edge, on a dead branch at the top of a tree next to a trail	The documentation form by Thomas M. Schulein is the earliest and the one that forms the basis of this record. \| Elimination of similar species: 1. Cooper's Hawk, but this bird has a barred breast and no eye patches and a dark and light head pattern. 2. White-tailed Kite, but this bird has dark wing patches. 3. Osprey, but this bird is larger and is brown and white, even though it has dark eye patches. \| The original documentation form event lasted from 07:45:00/08:00:00.	Iowa Ornithologists' Union \| MS 166	8	26
Records Committee review for rare bird sighting of Mississippi Kite at Ledges State Park, 1990	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1990-05-13	1993-07-17	Rare birds documentation form	Records Committee review of a Mississippi Kite at Ledges State Park in Boone County, IA on May 13, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Sinclair, Jim	Mississippi Kite	Ledges State Park	Ledges St. Pk. - Pea's Creek	wooded valley	The documentation form by Jim Sinclair is the earliest and the one that forms the basis of this record. Other observers include David Youngblut. \| Elimination of similar species: Too large and uniform in color for a kestrel or merlin. Wings and tail too broad for one of the larger falcons. \| The original documentation form event lasted from 09:15:00/09:17:00.	Iowa Ornithologists' Union \| MS 166	8	26
Records Committee review for rare bird sighting of Red-throated Loon at Coralville Reservoir, 1990	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-11-04	1993-07-17	Rare birds documentation form	Records Committee review for a Red-throated Loon at Coralville Reservoir in Johnson County, IA on November 4, 1990. Includes a record review document with votes, an Iowa Bird Life article, and four documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Red-throated Loon	Coralville Lake	deep part of reservoir at West Overlook (just above dam) and at Mehaffy Bridge. Coralville Reservoir, Johnson County, Iowa	deep part of reservoir at West Overlook (just above dam) and at Mehaffy Bridge	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, Ann Johnson, and Carol Thompson. Other observers include Ken Lowder, Jim Scheib, Bud Goode, Cal Knight, Bernie Knight, and Beth Brown. \| Elimination of similar species: The head posture resembled a cormorant, but the bill, overall coloration, and behavior quickly excluded that possibility. The size and bill led me to an immediate identification. I was puzzled about the plumage. I expected to see a juvenile or basic-plumaged bird, but the distribution of dark coloration was that of alternate plumage. I assume that the red/black throat, lines of neck, and gray tones had faded to give one rather uniform color. The drab light may have contributed some to the failure to see color differences, but the last observation was relatively close and the texture of the feathers could be seen. \| The original documentation form event lasted from 07:45:00-08:30:00 and 12:20:00-12:45:00.	Iowa Ornithologists' Union \| MS 166	7	5
Records Committee review for rare bird sighting for Smew at Pool #13 in Clinton County, 1990	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1990-04-22	1993-07-17	Rare birds documentation form	Records Committee review for a Smew at Pool #13 in Clinton County, IA and Carrol County, IL on April 22, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Blevins, Brian L.	Smew	Pool 13	Pool 13 on Mississippi River (Gomer's Lake, Potter's Marsh) Clinton County, Ia Carrol County, Ill.	The bird was in a big river pool situation with hundreds of other divers mostly comprising of Redheads, Scaup, Buffleheads, and Goldeneyes. This particular area offers large extensive flats adjacent to both sides of the channel.	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Another observer was Corey Blevins. \| Elimination of similar species: About the only thing that is close is the Bufflehead and they were feeding with this bird, thus contrasting them was easy. The head difference was unmistakable with the buffs having an all dark head with a white spot, where as the smew had a white head with a black patch. \| The original documentation form event lasted from 15:13:00/15:36:00.	Iowa Ornithologists' Union \| MS 166	8	22
Records Committee review for rare bird sighting of Garganey at IPS Fly Ash Pits, 1991	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1991-05-11	1993-07-17	Rare birds documentation form	Records Committee review of a Garganey at IPS Fly Ash Pits, Woodbury County, IA on May 11, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.	Probst, Jerry	Garganey	New Lake	IPS Fly Ash Pits	Open pond flyash shore	The documentation form by Jerry Probst is the earliest and the one that forms the basis of this record. Another documentation form by Bill Huser was submitted later. Other observers include Bob Livermore, Dave Stage, Bob Moritz, and Art Huser. \| Elimination of similar species: The eyebrow stripe eliminated bluewing teal also the other field marks did not indicate a hybrid. Direct size comparison with other ducks in area eliminated all other ducks and geese. \| The original documentation form event lasted from 13:30:00/14:00:00.	Iowa Ornithologists' Union \| MS 166	8	15
Records Committee review for rare bird sighting of Eurasian Wigeon at Riverton Area, 1991	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1991-03-06	1993-07-17	Rare birds documentation form	Records Committee review of a Eurasian Wigeon at Riverton Area in Fremont County, IA on March 6, 1991. Includes a record review document with votes, an Iowa Bird Life article, and two documentation forms submitted to the committee.	Dinsmore, Stephen J.	Eurasian Wigeon	Riverton Wildlife Management Area	Riverton W.A., Fremont Co., IA		The documentation form by Stephen J. Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Eugene Armstrong was submitted later. Other observers include Eloise Armstrong, and Ross Silcock \| Elimination of similar species: The combination of reddish head with buffy crown, gray mantle and flanks, black rump and undertail, and stubby, bluish-gray bill eliminates other waterfowl. \| The original documentation form event lasted from 10:35:00/11:05:00, 12:05:00/12:25:00, and 16:40:00/17:22:00.	Iowa Ornithologists' Union \| MS 166	8	14
Records Committee review for rare bird sighting of Ross' Goose at Cone Marsh, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-03-11	1993-07-17	Rare birds documentation form	Records Committee review of two Ross' Goose at Cone Marsh in Louisa County, IA on March 11, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Ross' Goose	Cone Marsh Wildlife Management Area	Cone M., Louisa Co., IA	Marsh	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: Snow Goose - see above. \| The original documentation form event lasted from 14:15:00/14:33:00	Iowa Ornithologists' Union \| MS 166	8	8
Records Committee review for rare bird sighting of Ross' Goose at Coralville Reservoir, 1990	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-03-02	1993-07-17	Rare birds documentation form	Records Committee review of a Ross' Goose at Coralville Reservoir in Johnson County, IA on March 2, 1990. Includes a record review document with votes, an Iowa Bird Life article, and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Ross' Goose	Coralville Lake	West overlook, Coralville Res., Johnson Co., Iowa	reservoir above dam	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: Size, bill shape and size, head shape used to separate from Snow Goose. \| The original documentation form event lasted from 16:15:00/16:45:00.	Iowa Ornithologists' Union \| MS 166	8	8
Records Committee review for rare bird sighting of Ibis Species at Cone Marsh, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-04-23	1993-07-17	Rare birds documentation form	Records Committee review of a bird (Ibis species) at Cone Marsh in Louisa Co, IA on April 23, 1990. Includes a record review document with votes and three documentation forms submitted to the committee.	Petersen, Peter C.	Glossy Ibises	Cone Marsh Wildlife Management Area	N.E. Corner of Cone Marsh, Louisa Co., IA	Marsh & Mud Flat, shore areas	The documentation form by Peter C. Petersen is the earliest and the one that forms the basis of this record. Other documentation forms by Carl J. Bendorf and Jim Fuller were submitted later. Other observers include Ken Lowder, Ann Barker, John Daniels, Jim Sieh, Cal Knight, Bernie Knight, Brian Blevins, and Rick Hollis. \| Elimination of similar species: White-faced Ibis, which was present for direct comparison, had a wide white facial border around a reddish-brown facial patch, eye seemed red but distance was a bit far to be positive, legs were uniformly reddish brown, bill darker and more reddish & bird seemed a bit smaller. \| The original documentation form event lasted from 08:30:00/09:40:00.	Iowa Ornithologists' Union \| MS 166	7	21
Records Committee review for rare bird sighting of Tricolored Heron at IPL Ponds, 1991	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-05-04	1993-07-17	Rare birds documentation form	Records Committee review of a Tricolored Heron at the Iowa Power and Light settling ponds, in Council Bluffs, IA on May 4, 1991. Includes a record review document with votes, an Iowa Bird Life article, and a documentation form submitted to the committee.	Greer, Janet	Tricolored Heron	MidAmerican Energy Ponds	Iowa Power and Light settling ponds, Council Bluffs, IA	lakeshore	The documentation form by Janet Greer is the earliest and the one that forms the basis of this record. Other observers include Marge Graf, Dutch Graf, and Mary Jo Harlow. \| Elimination of similar species: Great Blue Heron: Eliminated by bill color, rusty feathers on the breast, white belly and leg color, and dark face and crown. Little Blue Heron: Eliminated by size, rusty wing coverts, and white chin. \| The original documentation form event lasted from 11:30:00/12:40:00.	Iowa Ornithologists' Union \| MS 166	7	18
Records Committee review for rare bird sighting of Pacific Loon at Pleasant Creek State Park, 1991	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1991-11-09	1993-07-17	Rare birds documentation form	Records Committee review for a Pacific Loon at Pleasant Creek State Park in Linn County, IA on November 9, 1991. Includes a record review document with votes, a photo, pages from an issue of Iowa Bird Life, and six documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Pacific Loon	Pleasant Creek State Park	Pleasant Creek State Park, Linn Co., IA.	Deep artificial lake with many ducks.	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, David L. Dankert, Randall Pinkston, Carl J. Bendorf, and Mark Proescholdt were submitted later. Other observers include Pete Wickham, John Daniel, Jeffrey B. Dankert, Beth Proescholdt, Pam Allen and Reid Allen. \| Elimination of similar species: No Common Loons present for comparison, but several were seen earlier in day at Lake Macbride. Bill thinner and straighter than Common Loon. No white around eye. Very sharp demarcation down neck. Neck mark was very thin and faint to me. \| The original documentation form event lasted from 12:00:00/12:45:00.	Iowa Ornithologists' Union \| MS 166	7	7
Records Committee review for rare bird sighting of Pacific Loon at Saylorville Reservoir, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-11-10	1993-07-17	Rare birds documentation form	Records Committee review for a Pacific Loon at Saylorville Reservoir in Polk County, IA on November 10, 1990. Includes a record review document with votes and a documentation forms submitted to the committee.	Johnson, Ann	Pacific Loon	Jester Park	Jester Park, Saylorville Reservoir, Polk Co., IA	Open water	The documentation form by Ann Johnson is the earliest and the one that forms the basis of this record. Other observers include Reid Allen, Pam Allen, Eugene Armstrong, and Eloise Armstrong. \| Elimination of similar species: Red-throated and Yellow-billed Loons could both be eliminated by the horizontal head and bill. This bird also showed a more rounded head and definite black/white contrast which was lacking in the Red-throated Loon I had observed six days earlier. Common Loon was eliminated by combination of size, smaller bill, distinct line separating white and black feathers, and ultimately by the chinstrap. \| The original documentation form event lasted from 12:10:00/12:30:00.	Iowa Ornithologists' Union \| MS 166	7	7
Records Committee review for rare bird sighting of Pacific Loon at Little Wall Lake, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-10-23	1993-07-17	Rare birds documentation form	Records Committee review for a Pacific Loon at Little Wall Lake in Hamilton County, IA on October 23, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Pacific Loon	Little Wall Lake	Little Wall L., Hamilton Co.		The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. \| Elimination of similar species: This smaller loon was dark gray across the back and wings, slightly darker than the Common Loon with it. [...] The whole neck pattern was much different and cleaner looking than the Common Loon. The bill was dark, short, and straight. It was about 1/3 shorter than the bill of the Common Loon and had a stockier appearance. [...] Common Loon eliminated above. Red-throated Loon eliminated by the dark back, neck pattern, and bill size and shape. \| The original documentation form event lasted from 11:06:00/11:45:00.	Iowa Ornithologists' Union \| MS 166	7	7
Records Committee review for rare bird sighting of Red-throated Loon at Lake Manawa State Park, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-11-12	1993-07-17	Rare birds documentation form	Records Committee review for a Red-throated Loon at Lake Manawa State Park in Pottawattamie County, IA on November 12, 1990. Includes a record review document with votes and two documentation forms submitted to the committee.	Johnson, Ann	Red-throated Loon	Lake Manawa State Park	Lake Manawa State Park, Pottawattamie County, Iowa	Open water	The documentation form by Ann Johnson is the earliest and the one that forms the basis of this record. Another documentation form by Tanya E. Bray was submitted later. Other observers include Babs Padelford, BJ Rose, Ross Silcock, and Tim Schantz. \| Elimination of similar species: Cormorants could be eliminated by bill shape, among other characteristics. The bird had some similarities to a Western Grebe, but the grebe would hold its head parallel to the water, has a longer neck, and does not show the contrast between head/nape and back. Common Loon was eliminated by posture, size and shape of bill, contrast of lighter head and darker back, and more diffuse separation of upper and underparts. Pacific Loon was eliminated by the grayer underparts, diffuse separation of upper and underparts, posture, and sharp upward angle on lower mandible. \| The original documentation form event lasted from 11:50:00/12:15:00.	Iowa Ornithologists' Union \| MS 166	7	5