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

Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Peter C. Petersen, December 22, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-22	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Princeton and Camanche contributed by Peter C. Petersen, December 22, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Petersen, Peter C.	Yellow-bellied Sapsucker Cooper's Hawk Ring-billed Gull American Crow Blue Jay White-breasted Nuthatch Northern Cardinal Loggerhead Shrike Common Pigeon Ring-necked Duck Goldeneye House Sparrow Herring Gull Eastern Meadowlark Common Snipe American Tree Sparrow Fox Sparrow Red-breasted Nuthatch Black-capped Chickadee Dark-eyed Junco Mourning Dove Common Merganser American Goldfinch Sharp-shinned Hawk Eastern Screech-Owl Common Starling	Princeton Camanche				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Darwin Koenig, December 31, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-31	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Decorah contributed by Darwin Koenig, December 31, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Koenig, Darwin	Killdeer American Crow Blue Jay Northern Cardinal Common Pigeon House Sparrow White-crowned Sparrow American Tree Sparrow Black-capped Chickadee Dark-eyed Junco American Black Duck Northern Harrier Common Starling	Decorah				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, W. Ross Silcock, December 31, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-31	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in the Tristate area (Fremont County, Missouri, Nebraska) contributed by W. Ross Silcock, December 31, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Silcock, W. Ross	Bald Eagle Red-tailed Hawk White-breasted Nuthatch Loggerhead Shrike House Sparrow Merlin Common Snipe American Tree Sparrow Red-breasted Nuthatch Snow Goose Belted Kingfisher American Robin Dark-eyed Junco Sharp-shinned Hawk Mallard Common Starling	Missouri Fremont County Nebraska				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Marie E. Spears Tiemann, December 27, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-27	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Shenandoah contributed by Marie E. Spears Tiemann, December 27, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Tiemann, Marie E. Spears	Northern Flicker Killdeer Bald Eagle Cooper's Hawk Common Grackle Rusty Blackbird Northern Cardinal Snow Bunting Goldeneye House Sparrow Ross' Goose Merlin Greater Scaup Common Snipe American Tree Sparrow Snow Goose Great Blue Heron Dark-eyed Junco Sharp-shinned Hawk Mallard Common Starling	Shenandoah				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Douglas Rose, January 1, 1989	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1989-01-01	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Fremont County and Mills County contributed by Douglas Rose, January 1, 1989. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Rose, Douglas L.	Yellow-bellied Sapsucker Bald Eagle American Crow Blue Jay Cedar Waxwing Common Pigeon White-throated Sparrow House Sparrow Barred Owl Merlin American Tree Sparrow Belted Kingfisher Black-capped Chickadee American Robin Dark-eyed Junco American Goldfinch Common Starling	Fremont County Mills County				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Alan G. Grenon, December 17, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-17	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Omaha contributed by Alan G. Grenon, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Grenon, Alan G.	Northern Flicker Bald Eagle American Crow Common Grackle Rusty Blackbird Cedar Waxwing White-breasted Nuthatch Northern Cardinal Common Pigeon Canvasback House Sparrow Barred Owl Merlin American Wigeon Redhead American Tree Sparrow Snow Goose Winter Wren Black-capped Chickadee American Robin Dark-eyed Junco American Goldfinch Downy Woodpecker Mallard Common Starling	Omaha				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, K. L. Drews, December 18, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-18	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in DeSoto National Wildlife Refuge contributed by K. L. Drews, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Drews, Karen L.	Northern Flicker Yellow-bellied Sapsucker Rough-legged Hawk Red-shouldered Hawk Cooper's Hawk American Crow Blue Jay Brown-headed Cowbird White-breasted Nuthatch Northern Cardinal Short-eared Owl Barrow's Goldeneye House Sparrow Brown Thrasher Brant Barred Owl Ross' Goose Long-eared Owl Northern Saw-whet Owl American Tree Sparrow Snow Goose Bufflehead Belted Kingfisher Gadwall Black-capped Chickadee Great Blue Heron Red-winged Blackbird American Robin American Goldfinch Common Pheasant Downy Woodpecker Mallard Common Starling	DeSoto National Wildlife Refuge				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Jerry Probst, December 17, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Laridae \| Gulls and Terns Ornithology--Methodology Weather	1988-12-17	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Sioux City contributed by Jerry Probst, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Probst, Jerry	Ring-billed Gull American Crow Brown-headed Cowbird White-breasted Nuthatch Common Pigeon House Sparrow Barred Owl Merlin Purple Finch Redhead Greater Scaup American Tree Sparrow Canada Goose Black-capped Chickadee Red-winged Blackbird Dark-eyed Junco Red Crossbill Mourning Dove Mallard Common Starling	Sioux City				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Robert I. Cecil, December 31, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-31	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Keokuk (Iowa, Illinois, Missouri) contributed by Robert I. Cecil, December 31, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Cecil, Robert I.	Killdeer Cooper's Hawk Ring-billed Gull Thayer's Gull American Crow Blue Jay Cedar Waxwing Northern Cardinal Vesper Sparrow Common Pigeon Canvasback House Sparrow Herring Gull Wood Duck American Wigeon Redhead Greater Scaup Common Snipe Long-eared Owl American Tree Sparrow Red-breasted Nuthatch Canada Goose Northern Pintail Winter Wren Black-capped Chickadee Dark-eyed Junco Common Merganser American Goldfinch Northern Harrier Sharp-shinned Hawk Mallard Common Starling	Missouri Keokuk Illinois				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Charles Fuller, December 17, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-17	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Burlington contributed by Charles Fuller, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Fuller, Charles R.	Red-shouldered Hawk Turkey Vulture American Crow Northern Cardinal Ring-necked Duck American White Pelican White-throated Sparrow House Sparrow Snowy Owl Barred Owl Herring Gull Purple Finch Golden Eagle Gray Catbird Northern Mockingbird American Tree Sparrow Golden-crowned Kinglet Black-capped Chickadee Dark-eyed Junco American Goldfinch Sharp-shinned Hawk Mallard Common Starling	Burlington				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Peter C. Petersen, December 19, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-19	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Oakville contributed by Peter C. Petersen, December 19, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Petersen, Peter C.	Red-shouldered Hawk Cooper's Hawk Prairie Falcon American Crow Blue Jay Cedar Waxwing White-breasted Nuthatch Northern Cardinal Carolina Wren Common Pigeon Barn Owl House Sparrow Ruddy Duck Northern Saw-whet Owl American Tree Sparrow Pine Siskin Canada Goose Northern Shoveler Black-capped Chickadee Great Blue Heron Western Meadowlark Red-winged Blackbird Dark-eyed Junco Mourning Dove American Goldfinch Sharp-shinned Hawk Downy Woodpecker Mallard Common Starling	Oakville				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Peter C. Petersen, December 17, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-17	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Muscatine contributed by Peter C. Petersen, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Petersen, Peter C.	Cooper's Hawk Ring-billed Gull American Crow Blue Jay Cedar Waxwing White-breasted Nuthatch Northern Cardinal Common Pigeon Goldeneye House Sparrow Herring Gull White-crowned Sparrow Eastern Meadowlark Glaucous Gull American Tree Sparrow Fox Sparrow Swamp Sparrow Black-capped Chickadee Red-winged Blackbird Mourning Dove Sharp-shinned Hawk Downy Woodpecker Mallard Common Starling	Muscatine				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Peter C. Petersen, December 18, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-18	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Davenport contributed by Peter C. Petersen, December 18, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Petersen, Peter C.	Cooper's Hawk Ring-billed Gull Great Black-backed Gull Double-crested Cormorant American Crow Blue Jay White-breasted Nuthatch Northern Cardinal Gray-cheeked Thrush Carolina Wren Common Pigeon Short-eared Owl Goldeneye House Sparrow Brown Thrasher Long-tailed Duck Herring Gull Ruddy Duck Long-eared Owl Spotted Towhee Bufflehead Canada Goose Black-capped Chickadee Red-bellied Woodpecker Great Blue Heron Bonaparte's Gull Dark-eyed Junco Mourning Dove Sharp-shinned Hawk Downy Woodpecker Mallard Common Starling	Davenport				Iowa Ornithologists' Union \| MS 166	23	8
Records Committee review for rare bird sighting of Yellow-billed Loon at Clear Lake, 1999	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1999-04-18	2000-11-28	Rare birds documentation form	Records Committee review for a Yellow-billed Loon at Clear Lake in Cerro Gordo County, IA on April 18, 1999. Includes a record review document with votes and a documentation form submitted to the committee.	Walter, Janice L.	Yellow-billed Loon	Clear Lake	North side of Clear Lake, Clear Lake, Iowa	Large open lake, no reeds or rushes in this area	The documentation form by Jan L. Walter is the only one submitted and forms the basis of this record. Other observers include Curt Nelson, and Carolyn Fischer. \| Elimination of similar species: Color, plumage, and bill shape eliminated Cormorants. Size eliminated Red-throated and Pacific Loons. Basic and immature plumage. Common Loon eliminated by straight, yellow aulmen, very pale tannish face, brown auricular patch, overall pale appearance of head and neck, and brown, not black, body. \| The original documentation form event lasted from 18:00:00/18:40:00.	Iowa Ornithologists' Union \| MS 166	7	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Peter C. Petersen, December 26, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-26	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Clinton contributed by Peter C. Petersen, December 26, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Petersen, Peter C.	Red-headed Woodpecker Cooper's Hawk American Crow Blue Jay Northern Cardinal Common Pigeon Canvasback Goldeneye House Sparrow Red-breasted Merganser Pileated Woodpecker American Tree Sparrow Canada Goose Black-capped Chickadee Dark-eyed Junco Mourning Dove American Black Duck Common Merganser American Goldfinch Northern Harrier Sharp-shinned Hawk Mallard Common Starling	Clinton				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, John Carl Miller, December 17, 1988	Field notes Forms (documents)	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-17	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Dubuque contributed by John Carl Miller, December 17, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Miller, John Carl	Cooper's Hawk American Crow Blue Jay Northern Cardinal Common Pigeon House Sparrow Northern Goshawk Herring Gull American Tree Sparrow Black-capped Chickadee Great Blue Heron Dark-eyed Junco American Goldfinch Northern Harrier Sharp-shinned Hawk Mallard Common Starling	Dubuque				Iowa Ornithologists' Union \| MS 166	23	8
Form for reporting Iowa Christmas bird counts to Iowa Bird Life, Darwin Koenig, December 26, 1988	Forms (documents) Reports	Bird watching Birds--Counting Birds--Research Ornithology--Methodology Weather	1988-12-26	N/A	Manuscript, graphic, and printed material	Iowa Christmas bird counts of species found in Yellow River State Forest contributed by Darwin Koenig, December 26, 1988. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Koenig, Darwin	Northern Cardinal Ring-necked Duck House Sparrow Common Snipe Red-breasted Nuthatch Belted Kingfisher Wild Turkey Red-winged Blackbird Dark-eyed Junco Northern Shrike Brown Creeper Mallard Common Starling	Yellow River State Forest				Iowa Ornithologists' Union \| MS 166	23	8
W. Ross Silcock letter to Thomas H. Kent regarding questions about the Christmas bird count, February 28, 1989	Correspondence	Bird watching Birds--Counting Birds--Research Ornithology--Methodology	1989-02-28	N/A	Manuscript, graphic, and printed material	Letter from W. Ross Silcock to Thomas H. Kent regarding questions about the Christmas bird count, February 28, 1989. The letter details several answers from Silcock to multiple inquiries from Kent. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1988-1989.	Silcock, W. Ross	Prairie Falcon Brewer's Blackbird Gray-cheeked Thrush Vesper Sparrow Trumpeter Swan Northern Goshawk Eastern Meadowlark Lincoln's Sparrow Bonaparte's Gull Western Meadowlark Tundra Swan	Burlington Davenport Keokuk Oakville Spirit Lake DeSoto National Wildlife Refuge				Iowa Ornithologists' Union \| MS 166	23	8
Nesting Wood Duck study (35 Years)	Reports Tables (documents)	Birds--Eggs Birds--Nests Birds--Research Ornithology--Methodology Birdhouses Predatory animals Waterfowl management Eggs--Incubation Ducks--Counting Ducklings Wood duck--Behavior	1984-01-01	1984-12-31	Manuscript, graphic, and printed material	A report compiling the discoveries from 35 years of nesting Wood Duck studies written by Frederic Leopold. The typewritten report details Leopold's findings on the nesting habits of Wood Ducks, including the following: nest site selection, Wood Duck nesting boxes, mating, egg laying, incubation, hatching, departure from the nest, travel of ducklings to water, predatory animals, and maintenance of the Wood Duck nest boxes. A table of 35 years of statistics based on over 10,000 observations is included at the end of the report.	Leopold, Frederic, 1895-1989	Wood Duck	Burlington				Frederic Leopold Papers \| MS 113	12	8
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 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 Ross' Goose at Willow Slough, 1980	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1980-03-21	1993-08-16	Rare birds documentation form	Records Committee review for a Ross' Goose at Willow Slough in Mills County, IA on March 21, 1980. Includes a record review document with votes and a documentation form submitted to the committee.	Wilson, Barbara L.	Ross' Goose	Willow Slough Dam	Willow Slough, Mills County, Iowa		The documentation form by Barb Wilson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Snow Goose! Seemed to differ in size, head shape, bill shape, color of bill (darker in Ross' goose) and lack of black grin mark. \| The original documentation form event occurred around 16:30:00.	Iowa Ornithologists' Union \| MS 166	8	8
Records Committee review for rare bird sighting of Ross' Goose at Forney Lake, 1980	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1980-03-19	1993-08-16	Rare birds documentation form	Records Committee review of a Ross' Goose at Forney Lake in Fremont County, IA on March 19, 1980. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Ross' Goose	Forneys Lake	Forney L. Fremont Co. IA	large shallow lake-marsh Forney L.	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 \| The original documentation form event lasted from 15:35:00/15:50:00.	Iowa Ornithologists' Union \| MS 166	8	8
Records Committee review for rare bird sighting of Yellow-billed Loon at Little Wall Lake, 1999	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1999-12-02	2000-11-28	Rare birds documentation form	Records Committee review for a Yellow-billed Loon at Little Wall Lake in Hamilton County, IA on December 2, 1999. Includes a record review document with votes, a print of four photos, and six documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Yellow-billed Loon	Little Wall Lake	Little Wall Lake, Hamilton Co., IA	Natural lake in glaciated area. All open water.	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, Chris Edwards, Jim Dinsmore, Stephen J. Dinsmore, and Mark Proescholdt were submitted later. Other observers include Kevin Healy, Dick Tetrault, Reid Allen, Pam Allen, Eloise Armstrong, Eugene Armstrong, Beth Proescholdt, Kay Niyo, Eric Haley, and Hank Zaletel. \| Elimination of similar species: The size and thick bill exclude Red-throated and Pacific Loons. The features that favor Yellow-billed over Common Loon include the bill shape, dark line to mid culmen, small eye, auricular patch, and the pattern of the foreneck and face (little extension of white and mottled color). The back pattern (wavy white lines rather than fuzzy white lines with dark bars) and paleness of the auricular patch indicate a juvenile. \| The original documentation form event lasted from 07:45:00/09:00:00.	Iowa Ornithologists' Union \| MS 166	7	8