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 of Burrowing Owl east of Larchwood, 1998	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1998-08-30	2000-11-24	Rare birds documentation form	Records Committee review for a Burrowing Owl east of Larchwood in Lyon County, IA on August 30, 1998. Includes a record review document with votes, an article in Iowa Bird Life, and a photograph submitted to the committee.	Harr, Douglas C.	Burrowing Owl	Larchwood	[...] probable nest site three miles east of Larchwood.		The article by Doug Harr forms the basis of this record. Another observer is Dolly Zangger. \| Elimination of similar species: [...] I saw no evidence of other owls on this or subsequent visits.	Iowa Ornithologists' Union \| MS 166	12	17
Records Committee review for rare bird sighting of California Gull at Babcock Access at Coralville Reservoir, 1990	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-10-27	1993-07-17	Rare birds documentation form	Records Committee review for a California Gull at Babcock Access at Coralville Reservoir in Johnson County, IA on October 27, 1990. Includes a record review document with votes, two articles in Iowa Bird Life, and five documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	California Gull	Babcock Access	Babcock Access, Coralville Reservoir, Johnson County, Iowa	shallow, open area of reservoir	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Randy Pinkston, Carol Thompson, and Carl J. Bendorf were submitted later. Other observers include Timothy Dwyer, John Cordell, James Huntington, Cal Knight, Bernie Knight, and Rick Hollis. \| Elimination of similar species: First-year Ring-billed Gulls were all in first winter plumage with gray mantle and were much lighter overall. The only other species considered is juvenile Herring Gull. The size is small for Herring Gull. The elongated appearance and short legs fit California Gull. Most young Herrings that I see in early fall have mostly dark bills that are larger than that of this bird. The double inner wing bar and lighter tertial tips fit California Gull. The overall relatively uniform and relatively light brown color without windows in the inner primaries also made this bird look different from Herring Gull. \| The original documentation form event lasted from 15:15:00/16:55:00 on October 27, 1990 and from 19:10:00/22:30:00 and 15:00:00/16:00:00 on October 28, 1990.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Carter Lake, 1993	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1993-11-21	1995-07-08	Rare birds documentation form	Records Committee review for a California Gull at Carter Lake in Pottawattamie County, IA on November 21, 1993. Includes a record review document with votes, a photograph, an article in Iowa Bird Life, and three documentation forms submitted to the committee.	Bray, Tanya	California Gull	Carter Lake	Carter Lake, Pottawattamie County		The documentation form by Tanya Bray forms the basis of this record. Other documentation forms by Loren and Babs Padelford, and Ross Silcock were submitted. Other observers include Jerry Toll and B.J. Rose. \| Elimination of similar species: Both Ring-billed and Herring Gulls are eliminated by bill coloration, size, slightly darker mantle, and eye color. Western, Lesser-black backed would be darker mantled, different bill coloration. \| The original documentation form event lasted from 10:30:00/10:58:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Credit Island, 1989	Administrative records Clippings (information artifacts) Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-11-23	1993-07-21	Rare birds documentation form	Records Committee review for a California Gull at Credit Island in Scott County, IA on November 23, 1989. Includes a record review document with votes, an article in Iowa Bird Life, correspondence about the sighting from Louise Augustine to Carl Bendorf, and three documentation forms submitted to the committee.	Augustine, Louise	California Gull	Credit Island	Credit Island - Davenport, Iowa - Scott County	This is an unfamiliar Area for me - I have never birded there before - The Place Credit Island - Backwater of Mississippi River - There was some ICE and open water - Many Gulls were in this Backwater area - on ice and in water. Probably around 1,500 Gulls -	The documentation form by Louise Augustine forms the basis of this record. Other documentation forms by Peter C. Petersen and Jim Fuller were submitted. Other observers include Randy Pinkston, Mary Lou Petersen, Jerome Augustine, David Augustine, and Julie Augustine. \| Elimination of similar species: Herring Gull - darker mantle - Dark eye - Leg Color - ashy-green gray not Pink - smaller size - slimmer build Ring-billed Gull - mantle too dark - dark eye - Bill had only a spot Leg Color not yellow - This bird larger than Ring-billed gulls - \| The original documentation form event lasted from 12:00:00/13:00:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Mini-Wakan State Park, 1996	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1996-09-06	2000-11-22	Rare birds documentation form	Records Committee review for a California Gull at Mini-Wakan State Park in Dickinson County, IA on September 6, 1996. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.	Bangma, Jim Johnson, Ann	California Gull	Mini Wakan State Park	Spirit Lake, north end, Dickinson Co., IA	Lakeshore	The documentation form by Jim Bangma and Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Ring-billed is ruled out by the solid gray mantle combined with the extensive molt of the flight feathers. Ring-bills and similar 3 year gulls obtain the gray mantle during a post-juvenal molt. Flight feathers are not molted at this time. Flight feathers are molted after one year, at which time the body of a Ring-bill would be much whiter. Also, the mantle was a much darker shade of gray than any Ring-bill present. Additionally, Ring-billed Gull's bill is proportionally smaller and thinner, with more curve. Herring Gull would be larger. The mantle of a Herring Gull would be paler gray, nearly the same shade as that of the Ring-bills. The bill would be proportionally heavier with a more marked gonydeal angle. Herring Gulls may show a black tipped bill, but the black normally blends into the pink of the base or runs in along the cutting edges of the bill. The bill and legs would be brighter pink. Other similarly sized extralimitals can be ruled out by the mantle color as well as bill pattern and shape. A striking feature of this bird was its leg length. In an effort to better understand this, Bangma paid a visit to the American Museum of Natural History and examined specimens of Herring, Ring-billed and California Gulls. Measurements were made of a representative selection of specimens. The following chart shows the results. [Chart] While there is some overlap between these species, it is interesting to note that the breaking point between California Gull and the other two is very near the ratio of 1.5. While not diagnostic by itself, the length of this bird's tarsus relative to the culmen as estimated by us in the field is indicative of California Gull. \| The original documentation form event lasted from 11:00:00/11:40:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Oak Grove Beach at Saylorville Reservoir, 1990	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-09-08	1993-07-17	Rare birds documentation form	Records Committee review for a California Gull at Oak Grove Beach at Saylorville Reservoir in Polk County, IA on September 8, 1990. Includes a record review document with votes and the article California Gull at Saylorville Reservoir in Iowa Bird Life 61:20 by Stephen Dinsmore reviewed by the committee.	Dinsmore, Stephen J.	California Gull	Oak Grove Recreation Area	[...] Oak Grove Beach Recreation Area at Saylorville Reservoir, Polk County.		The article by Stephen J. Dinsmore forms the basis of this record. \| Elimination of similar species: [...]The bird was similar in size to the largest Ring-billed Gulls, but slightly larger than others. I approached closer and noted that, when compared to a Ring-billed Gull, the bird had duller yellow legs, a stouter bill with black and red spots near the tip of the lower mandible, and a darker gray mantle. [...] The bird was slightly larger than most of the Ring-billed Gulls, although one or two of the biggest Ring-billed Gulls were as large as the bird I was studying. Proportionately, the bird was heavier and larger-headed than a Ring-billed Gull. [...] I estimated the mantle color to be about midway between those of Ring-billed Gull and a Lesser Black-backed Gull. [...] The bill was heavier than the bill of a Ring-billed Gull and had a distinct gonys. The legs were pale gray-green, unlike the bright yellow legs of a Ring-billed Gull. Leg length appeared similar to a Ring-billed Gull. \| The original documentation form event lasted from 07:45:00/09:27:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Runnells Wildlife Area, 1995	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1995-09-03	2000-11-20	Rare birds documentation form	Records Committee review for a California Gull at Runnells Wildlife Area in Marion County, IA on September 3, 1995. Includes a record review document with votes, two photographs, an article in Iowa Bird Life, and four documentation forms submitted to the committee.	Dinsmore, Stephen J.	California Gull	Red Rock Wildlife Area	1 mi e. of Swan, Marion Co. (Runnells W.A.)	pool of shallow water	The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Sinclair, Thomas H. Kent, and Jim Fuller were submitted later. \| Elimination of similar species: Ring-billed and Herring gulls are the two most likely species of confusion. Ring-billed Gull never shows this much brown in any plumage, has a dark tail band in immature plumages, has a different wing pattern, and is structurally different from California Gull. Herring Gull is more similar in first-basic plumage, but always shows a pale window on the inner primaries, lacks the double dark bar effect in the innerwing, is larger, and very rarely shows a strongly bicolored bill. \| The original documentation form event lasted from 10:55:00/12:24:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of California Gull at Saylorville Dam, 1993	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1993-12-06	1995-07-08	Rare birds documentation form	Records Committee review for a California Gull at Saylorville Dam in Polk County, IA on December 6, 1993. Includes a record review document with votes, an article in Iowa Bird Life, and two documentation forms submitted to the committee.	Pinkston, Randall, 1956-	California Gull	Saylorville Dam	Saylorville Reservoir dam, Polk County, Iowa		The documentation form by Randy Pinkston is the earliest and the one that forms the basis of this record. Another documentation form by Stephen J. Dinsmore was submitted later. Another observer includes Susan Grove. \| Elimination of similar species: I am uncomfortable committing to California Gull given the brief and distant view I had, and my limited past experience with the species. My fear is that this was just a small Herring Gull. Herring can be quite variable in overall size, bill size, and in terms of color and shade of the first-winter plumage. Supposedly 10-15% of first-winter Herrings' can have a "dipped-in-ink" bill in the fall (Harrison 1983 or Grant 1986?). \| The original documentation form event lasted from 12:30:00/15:30:00.	Iowa Ornithologists' Union \| MS 166	11	1
Records Committee review for rare bird sighting of Clark's Grebe at Diamond Lake, 1997	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1997-12-13	2000-11-24	Rare birds documentation form	Records Committee review for a Clark's Grebe at Diamond Lake in Poweshiek County, IA on December 13, 1997. Includes a record review document with votes, photos, an Iowa Bird Life article, and five documentation forms submitted to the committee.	Allen, Pam Allen, Reid I.	Clark's Grebe	Diamond Lake	Poweshiek County, Diamond Lake Park		The documentation form by Pam and Reid Allen is the earliest and the one that forms the basis of this record. Other documentation forms by Mark Proescholdt, Thomas H. Kent, Phil Walsh, and Michael D. Overton were submitted later. Other observers include Jim Sinclair, Ann Johnson, Eugene Armstrong, Dixie Overton, Cal Knight, Bernie Knight, and Eloise Armstrong. \| Elimination of similar species: The Western Grebe (Aechmorphorus occidentalis) has a much duller, greyish-greenish yellow bill and the body and flanks are blacker. Plus, the black cap extends over the eyes and lores, and there is a more solid blackish cast on the bill. \| The original documentation form event lasted from 12:15:00/14:10:00.	Iowa Ornithologists' Union \| MS 166	7	9
Records Committee review for rare bird sighting of Clark's Grebe at Pleasant Creek Lake, 1995	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1995-11-12	2000-11-22	Rare birds documentation form	Records Committee review for a Clark's Grebe at Pleasant Creek Lake in Linn County, IA on November 12, 1995. Includes a record review document with votes, an article in Iowa Bird Life, and three documentation forms submitted to the committee.	Edwards, Chris	Clark's Grebe	Pleasant Creek State Park	Pleasant Creek State Recreation Area, Linn Co.	Lake	The documentation form by Chris Edwards is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent and Jim Fuller were submitted later. Other observers include Alan Martin, Pete Wickham, John Daniel, Dick Tetrault, Dale Fye, Jim Scheib, Eloise Armstrong, Eugene Armstrong, and Helen Fye. \| Elimination of similar species: Western Grebe has a dull greenish yellow bill; black or gray lores; black or gray surrounding the eye; and a more uniformly dark back and flanks. \| The original documentation form event lasted from 10:30:00/11:30:00, 12:30:00/13:15:00, and 13:45:00/15:45:00.	Iowa Ornithologists' Union \| MS 166	7	9
Records Committee review for rare bird sighting of Clark's Grebe at South Twin Lake, 1994	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1994-11-25	1996-04-25	Rare birds documentation form	Records Committee review for a Clark's Grebe at South Twin Lake in Calhoun County, IA on November 25, 1994. Includes a record review document with votes, a photo, an Iowa Bird Life article, and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Clark's Grebe	South Twin Lake	South Twin L., Calhoun Co., IA	shallow lake	The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Another observer was Susan B. Grove. \| Elimination of similar species: The short body, longer neck, and bright orange bill color eliminates all species of loons. The only other similar species is Western Grebe, which has a dulller yellowish bill and dark lores and dark color around the eyes. \| The original documentation form event lasted from 08:25:00/08:55:00.	Iowa Ornithologists' Union \| MS 166	7	9
Records Committee review for rare bird sighting of Clark's Grebe at Trumbull Lake, 1994	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-05-13	1996-04-25	Rare birds documentation form	Records Committee review for a Clark's Grebe at Trumbull Lake in Clay County, IA on May 13, 1994. Includes a record review document with votes, an Iowa Bird Life, and a documentation form submitted to the committee.	Brewer, Marion M.	Clark's Grebe	Trumbull Lake	Trumble Lake	Lake	The documentation form by Marion W. Brewer is the only one submitted and forms the basis of this record. \| Elimination of similar species: Western, White in front, over & behind eye. \| The original documentation form event lasted from 12:30:00/12:50:00 and 13:15:00/13:48:00.	Iowa Ornithologists' Union \| MS 166	7	9
Records Committee review for rare bird sighting of Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir, 1989	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1989-11-02	1993-08-05	Rare birds documentation form	Records Committee review for a Common Black-headed Gull at Cherry Glen Recreation Area at Saylorville Reservoir in Polk County, IA on November 2, 1989. Includes a record review document with votes, an article in Iowa Bird Life, photocopies of four photographs, and two documentation forms submitted to the committee.	Dinsmore, Stephen J.	Black-headed Gull	Cherry Glen Recreation Area	Saylorville Reservoir, Polk Co.-off Cherry Glen Rec. Area	large reservoir	The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by B.J. Rose was submitted later. Other observers include Doug Rose, Roger Rose, and Ken Lowder. \| Elimination of similar species: Because of the fairly small size and conspicuous dark spot behind each eye, the bird must have been a Bonaparte's, Little, Common Black-headed, or Ross' gull, or a kittiwake. Separation from Bonaparte's Gull is discussed above. Little Gull eliminated by its smaller size, dark bill, lack of any black color on the upperwing, and uniformly dark underside to the flight feathers. Ross' Gull eliminated by tail shape, bill size and color, and darker underwing. Both kittiwakes eliminated by bill color, lighter mantle color, and differences in wing pattern. \| The original documentation form event lasted from 16:17:00/16:42:00.	Iowa Ornithologists' Union \| MS 166	10	21
Records Committee review for rare bird sighting of Common Eider at Red Rock Reservoir, 1995	Administrative records Clippings (information artifacts) Correspondence Field notes Forms (documents) Photographs	Bird watching Ornithology Ornithology--Societies, etc	1995-01-27	2000-11-18	Rare birds documentation form	Records Committee review of a Common Eider at Red Rock Reservoir in Marion County, IA on January 27, 1995. Includes a record review document with votes, correspondence over the sighting, photos, drawings of the bird sighting, articles in Iowa Bird Life, Field Notes, and other publications, and twelve documentation forms submitted to the committee.	Dinsmore, Stephen J.	Common Eider	Red Rock Dam	Des Moines River below Red Rock dam - Marion Co., Iowa	open stretch of river	The documentation form by Stephen J. Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Dinsmore, Thomas H. Kent, Jim Fuller, Reid Allen, Ann Johnson, Mark Proescholdt, Chris Edwards, Peter C. Petersen, Ray Cummins, Robert Cecil, and Diane Porter were submitted later. \| Elimination of similar species: See above discussion (Description). Steller's Eider eliminated by size. Female and immature King Eider eliminated by pattern of barring on flanks, size of bill, position of eye, faint white supercilium, and pattern of feathering on bill. Spectacled Eider eliminated by facial pattern and bill shape. \| The original documentation form event lasted from 13:45:00/15:05:00.	Iowa Ornithologists' Union \| MS 166	8	18
Records Committee review for rare bird sighting of Common Raven west of Mason City, 1966	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1966-12-28	1994-11-04	Rare birds documentation form	Records Committee review for a Common Raven west of Mason City in Cerro Gordo County, IA on December 28, 1966. Includes a record review document with votes and a documentation article submitted to the committee.	Roosa, Dean M.	Common Raven	Mason City	[...] driving from Clear Lake to Mason City		The documentation article by Dean M. Roosa forms the basis of this record. Other observers include Paul Bailey. \| Elimination of similar species: [...] Its flight pattern, size, and rounded or wedge-shaped tail distinguished it from nearby Crows.	Iowa Ornithologists' Union \| MS 166	12	47
Records Committee review for rare bird sighting of Curlew Sandpiper at Cedar Lake, 1985	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1985-05-10	1993-09-03	Rare birds documentation form	Records Committee review for a Curlew Sandpiper at Cedar Lake in Chickasaw County, IA on May 10, 1985. Includes a record review document with votes, an article in Iowa Bird Life and a documentation form submitted to the committee.	Moore, Francis L.	Curlew Sandpiper	Cedar Lake	Cedar Lake on Cedar River at Nashua, Chickasaw Co., Iowa	Open mud flat with sparse emergent vegetation near open lake.	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. \| Elimination of similar species: Red Knot has straight black bill and is larger than Pectoral Sandpiper. Sanderling is about same size but also has a straight black bill not long, thin and decurved as in this bird. \| The original documentation form event lasted from 08:45:00/10:45:00.	Iowa Ornithologists' Union \| MS 166	10	7
Records Committee review for rare bird sighting of Curlew Sandpiper at Hawkeye Wildlife Area, 1988	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-05-13	1993-08-04	Rare birds documentation form	Records Committee review for a Curlew Sandpiper at Hawkeye Wildlife Area in Johnson County, IA on May 13, 1988. Includes a record review document with votes, an article in Iowa Bird Life, and five documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Curlew Sandpiper	Hawkeye Wildlife Management Area	near DuPont Bridge, Hawkeye Wildlife Area, Johnson Co, IA	old backwater in reservoir flood plain, muddy edge	The documentation form by Thomas H. Kent forms the basis of this record. Other documentation forms by Francis L. Moore, Peter C. Petersen, Jim Fuller, and Carl Bendorf were submitted. Other observers include Ross Silcock, Walter Zuurdeeg, and Dick Tetrault. \| Elimination of similar species: No other species has similar features. \| The original documentation form event lasted from 12:50:00/13:30:00.	Iowa Ornithologists' Union \| MS 166	10	7
Records Committee review for rare bird sighting of Eurasian Wigeon at Sweet Marsh, 1984	Administrative records Clippings (information artifacts) Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1984-04-15	1993-09-01	Rare birds documentation form	Records Committee review of a Eurasian Wigeon at Sweet Marsh in Bremer County, IA on April 15, 1984. Includes a record review document with votes, an article in Iowa Bird Life, a summary of review, and eight documentation forms submitted to the committee.	Main, Stephen	Eurasian Wigeon	Sweet Marsh	Sweets Marsh, NW section, Tripoli, IA	Marsh - see above	The documentation form by Stephen Main is the earliest and the one that forms the basis of this record. Other documentation forms by Elaine Main, Francis L. Moore, Robert K. Myers, Thomas H. Kent, Thomas J. Staudt, Peter C. Petersen, and Carl J. Bendorf were submitted later. Other observers include Roberta Oppedahl and Lucille Liljedahl. \| Elimination of similar species: have previously seen American Wigeon, Shoveler (present this time) and Redhead. \| The original documentation form event lasted from 11:00:00/12:00:00.	Iowa Ornithologists' Union \| MS 166	8	14
Records Committee review for rare bird sighting of Eurasian Wigeon at Ventura, 1992	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1992-03-18	1994-10-18	Rare birds documentation form	Records Committee review of a Eurasian Wigeon 4 miles south of Ventura in Cerro Gordo County, IA on March 18, 1992. Includes a record review document with votes, an Iowa Bird Life, and a documentation form submitted to the committee.	Pinkston, Randall, 1956-	Eurasian Wigeon	Ventura	County Roads B43 at S14, approx. 4 miles south of Ventura, Cerro Gordo Co., Iowa		The documentation form by Randall Pinkston is the earliest and the one that forms the basis of this record. \| Elimination of similar species: Obvious differences from American Wigeon include the American's dark (green) face mask, white forehead and crown ("baldpate"), as well as those other differences discussed above. Female American has finely mottled grayish head and brownish sides, lacks striking patterns on wings and hindparts. Redhead (Aythya americana) has 'pochard' gestalt with darker brick-red vs. cinnamon-buff head, head more rounded in profile, tricolored bill broad and stout. Also has relatively plain wing with gray coverts and pale gray remiges. Canvasback (Aythya valisineria) of either sex safely separable on the basis of head and bill in profile. Again, male's head is dark brick-red, back and sides whitish, lacks bold wing pattern. Female mergansers easily separable on the basis of bill alone. \| The original documentation form event occurred around 11:00:00.	Iowa Ornithologists' Union \| MS 166	8	14
Records Committee review for rare bird sighting of Ferruginous Hawk at both Oxford and Homestead, 1979	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1979-02-03	1994-02-03	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at both Oxford in Johnson County, IA and Homestead in Iowa County, IA on February 3 and 4, 1979. Includes a record review document with votes, two articles in Iowa Bird Life, and two documentation forms submitted to the committee.	Hollis, Richard Jule	Ferruginous Hawk	Township of Oxford	N Eastern Oxford Township, Johnson Co., Iowa	perched on hedge rows or wood edges over snow covered fields	The documentation form by Richard Jule Hollis is the earliest and the one that forms the basis of this record. Other documentation forms by Carl Bendorf were submitted later. Other observers include Janet Hollis and Cal Knight. \| Elimination of similar species: red upper surface of Iower tail and lack of belly band eliminates Buteo lagopus white under side of tail (w/o terminal band) + white upper tail tend to eliminate B. jamaicensis. \| The original documentation form event occurred at 16:00:00 for the sighting on February 4, 1979 and had no time for February 3, 1979.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Otter Creek Marsh, 1984	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1984-12-23	1993-09-01	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Otter Creek Marsh in Tama County, IA on December 23, 1984. Includes a record review document with votes, an article from Iowa Bird Life, and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Ferruginous Hawk	Otter Creek Marsh State Wildlife Refuge	Otter Creek M., Tama Co., Iowa	large, wide riverbottom marsh with scattered woods.	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: According to Eckert, the upper wing patches are diagnostic if the location is right. He gives the following example as an acceptable documentation: 'On the upper surface of each wing there was a rectangular or oval white patch on the flight feathers. This patch was on the inner primaries, and perhaps faded a bit into the secondaries and outer primaries.' This description fits the bird I saw. Eckert gives two other diagnostic marks that I did not see (feathered legs, rufous back and shoulders), but only one of these three marks is needed. The white tail is not diagnostic, but coupled with the light underparts and generally dark upper wing surface, tends to exclude Krider's and Harlan's Hawks which would have light upper wings and dark underparts, respectively. An ordinary Red-tailed Hawk would not ordinarily have an all white-tail nor such prominent upper wing patches. The raised wings in flight in the absence of wind favor Ferruginous Hawk over Red-tailed and Rough-legged Hawks. Rough-legged Hawk is excluded by the lack of prominent black and white pattern to body, wing and tail. \| The original documentation form event lasted from 14:45:00/14:57:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Rathbun Reservoir, 1986	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1986-02-01	1993-09-07	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Rathbun Reservoir in Appanoose County, IA on February 1, 1986. Includes a record review document with votes, an article in Iowa Bird Life, a summary of the review, and a documentation form submitted to the committee.	Heusinkveld, Bill	Ferruginous Hawk	Rolling Cove Park	Rolling Cove Area, Rathbun Lake, Appanoose County	Perched in Large Tree in Grove next to Lake Rathbun	The documentation form by Bill Heusinkveld is the only one submitted and forms the basis of this record. Other observers include Marjorie Heusinkveld \| Elimination of similar species: Red tail eliminated by complete lack of belly band, no red tail. \| The original documentation form event lasted from 09:04:00/09:15:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Thornton, 1997	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1997-02-12	2000-11-24	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Thornton in Cerro Gordo, IA on February 12, 1997. Includes a record review document with votes, a photo, an article in Iowa Bird Life, and five documentation forms submitted to the committee.	Fischer, Carolyn J.	Ferruginous Hawk	Thornton	S.W. Cerro Gordo Co. N.W. of Thornton	open country	The documentation form by Carolyn Fischer is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Jim Dinsmore, Thomas Kent, and Stephen Dinsmore were submitted later. Other observers include Dick Tetrault, Helen Fye, Dale Fye, Diane Porter, G. Foster, Chris Caster, Mike Overton, Dixie Overton, Rob Muilenburg, Jan Walter, Tim Phalen, Lowell Washburn, Gerald White, and many unidentified observers. \| Elimination of similar species: Krider's Hawk - face wasn't all white + back wasn't heavily spotted. Also larger - Red-tailed Hawk - could not see dark patagial marks. Wingtips were long. Tail was not red - \| The original documentation form event lasted from 14:30:00/15:20:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk east of Laurens, 1984	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1984-10-25	1993-09-01	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Laurens in Pocahontas County, IA on October 25 and 26, 1984. Includes a record review document with votes, an article from Iowa Bird Life, and two documentation forms submitted to the committee.	Carlson, Judith	Ferruginous Hawk	Laurens	2 miles East Laurens, IA on Hiway [sic] 10	Road Ditch Fench [sic] Line & Large Farm Grove	The documentation form by Judith Carlson is the earliest and the one that forms the basis of this record. Other documentation forms by Ronald Harms were submitted later. Other observers include Helen Carlson. \| Elimination of similar species: Red Tail are darker and stockier in appearance. Osprey - smaller, darker on back and eye stripe wider, lower & longer. Rough Legged darker all over on front. \| The original documentation form event lasted from 17:45:00/18:15:00 and 10:30:00/11:25:00 on October 26, 1984.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk east of Shenandoah, 1983	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1983-10-26	1993-09-01	Rare birds documentation form	Records Committee review of a Ferruginous Hawk east of Shenandoah in Page County, IA on October 26, 1983. Includes a record review document with votes, an article in Iowa Bird Life, a summary of the review, and a documentation form submitted to the committee.	Braley, Jean B.	Ferruginous Hawk	Shenandoah	E. of Shenandoah on Highway #2		The documentation form by Jean Braley is the earliest and the one that forms the basis of this record. Other observers include Francis Braley.	Iowa Ornithologists' Union \| MS 166	9	1