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 Ferruginous Hawk in Cherokee County, 1985	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1985-03-28	1993-09-03	Rare birds documentation form	Records Committee review of a Ferruginous Hawk in Cherokee County, IA on March 28, 1985. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.	Brewer, Marion M.	Ferruginous Hawk	Cherokee County	Hwy 7 & M 31	Bean ground with some water ways (grass)	The documentation form by Marion M. Brewer is the only one submitted and forms the basis of this record. \| Elimination of similar species: Redtailed hawk, no horizontal streaking onthe [sic] belly and the rufous colored legs. \| The original documentation form event lasted from 16:40:00/16:45:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk in Story County, 1985	Administrative records Clippings (information artifacts) Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1985-09-29	1993-09-03	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Tiegs Marsh in Story County, IA on September 29, 1985. Includes a record review document with votes, correspondence about bird sightings, an article in Iowa Bird Life, and two documentation forms submitted to the committee.	Dinsmore, Stephen J.	Ferruginous Hawk	Story County	Tiegs Marsh, Story County	in open cropland near a small marsh	The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Fred J. Alsop were submitted later. Other observers include Dr. George Brown and Paul Martsching. \| Elimination of similar species: Red-tailed hawk eliminated by lack of dark bar on leading edge of underwing, position of white wing patches, white tail with rusty tip, lack of belly band, and rust color on back and wings. Rough-legged hawk eliminated by lack of wrist marks, rust color on back and wings, all white legs, unbanded tail and lack of belly band. \| The original documentation form event lasted from 09:30:00/09:35:00 and 10:10:00 to 10:15:00 estimated.	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 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 Ferruginous Hawk at Red Rock Reservoir, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-01-02	1993-08-05	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Red Rock Reservoir in Marion County, IA on January 2, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Ferruginous Hawk	Lake Red Rock	Lake Red Rock, Marion Co, IA	pasture with wooded draw to the south	The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: This was a classic case of delayed reaction as I began sorting through in my mind as I drove down the road. The large size and bulk of the bird, plus the broad, rounded tail made it an obvious buteo. After double-checking all phases of the rough-legged hawk in Clark's Hawks, I once again eliminated rough-leg because of the nearly all white underparts. However, redtail wasn't fitting either, even a light phase, and a few miles down the road the ferruginous crossed my mind. I pulled off the road, made a few notes, and began researching with the guides at hand. The most troublesome field mark was the 'white tail with gray band.' I have seen numerous redtails give the white rump appearance but none have had the distinctive white tail/gray terminal band. There was absolutely no dark patagial marking on the underwing. The combination of field marks (or lack thereof) would seem to approach an immature Krider's redtail. I eliminated this bird because of the appearance of one, wide gray tail band and the more uniform coloring of the body - very little white mottling. Although I wish I'd had a longer look, I came to the conclusion that the combination of what I had observed pointed toward an immature ferruginous hawk. \| The original documentation form event lasted from approximately 09:00:00/09:01:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Benton Township in Fremont County, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-01-17	1993-08-05	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Benton Township in Fremont County, IA on January 17, 1989. Includes a record review document with votes, field notes of the sighting, and a documentation form submitted to the committee.	Silcock, W. Ross	Ferruginous Hawk	Benton Township	Benton TWP, Fremont Co., IA.	Open Missouri riverbottom; soybean stubble fields	The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. \| Elimination of similar species: See attached discussion. (After writing my field notes at the site of observation and returning home later I found the stnadard field guides most unhelpful. Dunne et al's discussion of Ferruginous was tremendous, indicating variation in Ferruginous Hawks, and especially in discussion of flight characteristics, 'jizz', and behavior [...] The only possibility which is realistic to consider is Redtailed [sic] Hawk, or possibly Rough-legged Hawk. While similar in 'jizz' to a rough-leg (long tail, flight with 'crooked' (=osprey-like) wings, darker mottling underneath, longish wings), Roughleg can be eliminated by the following characters - absence of characteristic underwing pattern, including significant wrist mark (Ferruginous should show this to some extent according to Dunne et al, but I did not see it; remember I did not see the underparts well), and method of hunting-I have never seen a roughleg fly this low over the ground for this long (about a mile) - much lower and more consistently so than a harrier. Regarding elimination of Red-tail - I really think it is easier to eliminate Red-tail than rough-leg based on 'jizz'. The tail was too long, was never spread, and wings were long than Red-tail's. Tail pattern and 'three points of light' combination also is never seen on a Redtail [sic], especially when viewed from above. (The similarity to Roughleg [sic] in pattern can be seen in the front end paper in Dunne et al). Habitat and behavior also are important - while Redtails [sic] are very common in Fremont County, they are definitely not common on the open Missouri bottomlands. Redtail [sic] is a bird of edge habitat. I always look closely at any buteo seen from October to April on the open bottomlands. I have never seen any other buteo fly as low to the ground for as long as this bird - when i say low, I mean 1-2 ft above the ground. At no time was the bird higher than 6', and that was when perched on possibly the lowest post for some distance. Even a Harrier will rise and fall while hunting. This bird stayed low, in the manner of a hunting Golden Eagle (which I have seen in Western Kansas) - a point also mentioned by Dunne et al. Another point noted by Dunne et al and also shown in my sketch (purposely!) and, mentioned in my field notes was the osprey-like crook in the wings-while flying low over the ground. Dunne et al note that this is characteristic of a hunting Ferruginous. \| The original documentation form event lasted from 15:30:00/15:45:00.	Iowa Ornithologists' Union \| MS 166	9	1
Record Committee review for rare bird sighting of Ferruginous Hawk west of Conesville, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-04-29	1993-08-05	Rare birds documentation form	Record Committee review of a Ferruginous Hawk west of Conesville on edge of Louisa and Muscatine County, IA on April 29, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Ferruginous Hawk	Conesville	1 mi. W. conesville edge of Muscatine and Louise Cos., IA	cultivated fields	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Brian, Corey, and Lewis Blevins. \| Elimination of similar species: Rough-legged hawk - underwing would show more dark in the underwing coverts, well defined tail band. Kriders Red-tail - has a very light head. \| The original documentation form event lasted from 13:45:00/13:50:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Paulina, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-06-03	1993-08-05	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Paulina in O'Brien County, IA on June 3, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Bierman, Dick	Ferruginous Hawk	Paullina	5 miles North of Paulina Iowa OBrien [sic] Co.	Flat, Agricultural, only farm Groves for Trees	The documentation form by Dick Bierman is the only one submitted and forms the basis of this record. \| Elimination of similar species: Swainson's Hawk have dark primaries. Red Tails with light tails have a terminal band. This one didn't. Red Tails do not have dark legs that are feathered to the ankle. \| The original documentation form event lasted from 08:15:00/08:18:00 and 09:40:00 to 09:50:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Princeton Marsh, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-05-08	1993-07-17	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Princeton Marsh in Scott County, IA on May 8, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Ferruginous Hawk	Princeton State Wildlife Management Area	Princeton Marsh, Scott Co., IA.	bird flying of marsh & agricultural area	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Brian Blevins and Don Moeller. \| Elimination of similar species: Red-tailed Hawk no windows from above, legs white, has breast band, tail uniform rusty red. \| The original documentation form event lasted from 13:30:00/13:32:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Thornton, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-04-23	1993-07-17	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Thornton in Cerro Gordo County, IA on April 23, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.	Fischer, Carolyn J.	Ferruginous Hawk	Thornton	North of Thorton [sic] on Eagle Ave. between 140-150 roads - Cerro Gordo County, Ia	shortgrass meadows, open area -	The documentation form by Carolyn Fischer forms the basis of this record. Another documentation form was submitted by Rita Goranson. \| Elimination of similar species: Krider's Hawk (this hawk was larger in size than a Krider's \| The original documentation form event lasted from 18:15:00/18:30:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Ames, 1992	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1992-04-05	1994-10-18	Rare birds documentation form	Records Committee review for a Ferruginous Hawk at Ames in Story County, IA on April 5, 1992. Includes a record review document with votes and a documentation form submitted to the committee.	Arbour, David	Ferruginous Hawk	Ames	At the intersection of I-35 and E29 () just N.E. of Ames:	Flat Farmland/Roadside	The documentation form by David Arbour is the only one submitted and forms the basis of this record. Other observers include Matt Humann, Harold Harbert, and Yumann Lee. \| Elimination of similar species: Red-tailed Hawk lacks the white crescent near the base of primaries and is smaller and shorter winged. Rough-legged Hawk has a dark belly band and a subterminal band on tail. \| The original documentation form event lasted for approximately 10 minutes during mid-morning.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk south of Shenandoah, 1977	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1977-10-27	1994-02-03	Rare birds documentation form	Records Committee review of a Ferruginous Hawk south of Shenandoah in Page County, IA on October 27, 1977. Includes a record review document with votes, two articles in Iowa Bird Life, a transcription of the documentation form, and a documentation form submitted to the committee.	Phipps, Ruth O.	Ferruginous Hawk	Shenandoah	Six miles south of Shenandoah, Iowa - Highway No. 59	General: western great plains Specific: open grasslands and plains	The documentation form by Ruth O. Phipps is the only one submitted and forms the basis of this record. Other observers include Wayne Phipps. \| Elimination of similar species: Red-tailed Hawk and Rough-legged. \| The original documentation form event lasted from 13:30:00 and 14:30:00/14:45:00.	Iowa Ornithologists' Union \| MS 166	9	1
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 Lee Township in Madison County, 1994	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-10-05	1996-04-25	Rare birds documentation form	Records Committee review for a Ferruginous Hawk at Lee Township in Madison County, IA on October 5, 1994. Includes a record review document with votes and a documentation form submitted to the committee.	Armstrong, Eloise	Ferruginous Hawk	Lee Township	Lee Twsp NE Madison County	Grasslands	The documentation form by Eloise Armstrong is the only one submitted and forms the basis of this record. Other observers include Eugene Armstrong. \| Elimination of similar species: A redtailed Hawk has outer white tail band and Red or Barred Tail. Flight is quite rapid-wings are shorter and more rounded Has larger square window in wing Krider's Red Tail Does not have very white underwing. Has a larger square window Further out on wings. Has a dark stripe on tail. Doesn't have a white rump. \| The original documentation form event lasted from 17:00:00/17:10:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Port Louisa National Wildlife Refuge, 1995	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc Wildlife conservation	1995-03-22	2000-11-18	Rare birds documentation form	Records Committee review for a Ferruginous Hawk at Port Louisa National Wildlife Refuge in Louisa County, IA on March 22, 1995. Includes a record review document with votes, drawings of the bird, and a documentation form submitted to the committee.	Mattsson, James P	Ferruginous Hawk	Port Louisa National Wildlife Refuge - Louisa Division	Louisa Division of the Mark Twain National Wildlife Refuge near Wapello, Iowa.		The documentation form by James P. Mattsson is the only one submitted and forms the basis of this record. Other observers include Michael Bornstein. \| Elimination of similar species: [...] The bird was most similar to the dark phase rough-legged hawk (Bureo lagopus) in size and general shape, but the latter species lacks the deep rust coloration on the upper wing coverts, scapulars, and upper back, and also has some dark banding on the outer one-half of the tail. Although by no means a conclusive characteristic, the subject bird did not hover during the period we observed it, a characteristic typical of hunting Rough-legged hawks. Dark phase Swainson's hawk have much darker, barred flight feathers and tail when viewed from below than that of the subject bird. \| The original documentation form event lasted from 12:30:00/12:45:00.	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 west of Ogden, 1998	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1998-08-09	2000-11-24	Rare birds documentation form	Records Committee review of a Ferruginous Hawk west of Ogden in Boone County, IA on August 9, 1998. Includes a record review document with votes and a documentation form submitted to the committee.	Junck, Rodger	Ferruginous Hawk	Ogden	1/4 mi. West of Ogden Iowa main street on gravel road at 'T' intersection by railroad tracks	Grassy rail road right of way bordered by corn/soybean fields	The documentation form by Rodger Junck is the only one submitted and forms the basis of this record. Other observers include unnamed sister. \| Elimination of similar species: Most familiar with red-tails. I have had more than a dozen of them at a time circling my combine during harvest. Have seen them 'displaying' against each other over a rabbit as well. In fact, I see them most days - but they are considerably too small and, except for the Krider's, would be wrong color. I have no info on if Kriders have a white head and white feathery legs \| The original documentation form event lasted from 09:30:00 - -09:35:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Ferruginous Hawk at Hichcock Nature Area, 1999	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1999-12-05	2000-11-28	Rare birds documentation form	Records Committee review of a Ferruginous Hawk at Hitchcock Nature Area in Pottawattamie County, IA on December 5, 1999. Includes a record review document with votes and a documentation form submitted to the committee.	Orsag, Mark	Ferruginous Hawk	Hitchcock Nature Area	Hitchcock Nature Area (Lodge Hawkwatch Point)	Loess Hills / Missouri River Valley. The bird was coming from out of the valley. It crossed the wooded ridges of HNA and headed southeast.	The documentation form by Mark Orsag is the earliest and the one that forms the basis of this record. \| Elimination of similar species: I considered 5 other species of raptor in total. I eliminated two possibilities (Rough-legged Hawk and Northern Harrier) within seconds of seeing the bird in question. I eliminated two others (Bald Eagle [imm.], and Red-tailed Hawk more or less during the minute or so that I had the bird in view. ** I reviewed, in my head, the fine points of the Krider's Red-tailed Hawk for a few seconds after the bird had disappeared from view. The fifth species came to mind just before I started writing this report (the next day). I retroactively eliminated it. In reconstructing my reasoning, I believe: Rough-leg was eliminated due to the unmarked white throat, breast, underwings, and underside. Northern Harrier was eliminated due [sic] the large size and robust shape of the bird, the flight pattern (especially wingbeat), the unstreaked white throat, etc. Immature Swainson's Hawk later eliminated by dark head, white wing patches on primaries, lack of dark flight feathers on underwing, unlikelihood of December sighting. Bald Eagle immature- (whitebelly I-II) was eliminated by the downpushing wingbeat, the colors of the bird's dorsal surface, the lack of a contrast on the dorsal surface between the brown-gray forward part of the wing and the darker flight feathers (a little known good fieldmark for Immature BE), and the confining of the white coloration to the primaries, etc. Red-tailed Hawk-This species, in light of its similar (but smaller) size and variable plumages, posed the greatest problems. The dark upper surface, dark head, pointed wings, and pattern of flight (dihedral in glide posture), as well as the distinct and identical nature of the white markings on the upperwings and the lack of patagial marks, "commas", or other dark markings on the underside, were considered in total and used to rule out the immature light-morph Red-tail and, on reflection, a partial albino Red-tail. Krider's Red-tailed Hawk was the toughest to rule out. Here are my reasons: 1. Krider's heads appear white/light in contrast to the darker (gray or brown) color of the back. This bird's head was not lighter in color (on top) than the back. Back coloring was too dark (brown-reddish) for Krider's-no white mottling seen. Wings were pointed not rounded. No 'headlight' fieldmark [sic] was seen and the 'points of light' fieldmark [sic] was. Dihedral in glide unusual but not impossible for a Red-tail, but the wingbeat (fluid and downpushing rather than centered on the downstroke at the wrist) did not look like a Red-tailed's. \| The original documentation form event lasted from 09:00:00/09:01:00.	Iowa Ornithologists' Union \| MS 166	9	1
Records Committee review for rare bird sighting of Rough-legged Hawk south of Liscomb, 1996	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1996-05-30	2000-11-22	Rare birds documentation form	Records Committee review of a Rough-legged Hawk south of Liscomb in Marshall County, IA on May 30 and 31, 1996. Includes a record review document with votes and a documentation form submitted to the committee.	Proescholdt, Mark	Rough-legged Hawk	Liscomb	South of Liscomb - (Marshall County)	corn field with new corn coming up and large field pond	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt at the May 30. 1996 sighting. \| Elimination of similar species: I can't think of other buteos it could be with its tail pattern, head coloration, and broad dark band across belly. \| The original documentation form event lasted from 17:30:00/18:50:00 on May 30, 1996 and 08:10:00/08:11:00 on May 31, 1996.	Iowa Ornithologists' Union \| MS 166	9	2
Records Committee review for rare bird sighting of Merlin in southwest Chickasaw, 1990	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1990-06-03	1993-07-17	Rare birds documentation form	Records Committee review of a Merlin in southwest Chickasaw County, IA on June 3, 1990. Includes a record review document with votes and a documentation form submitted to the committee.	Cecil, Robert I.	Merlin	Chickasaw County	S.W. Chickasaw Co.	Fence row in row-cropped ag. land	The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. \| Elimination of similar species: No other small falcon has uniform dark brown back and upper wing surface. It was much too small to be a female Peregrine. \| The original documentation form event lasted from 15:45:00/15:45:05.	Iowa Ornithologists' Union \| MS 166	9	3
Records Committee review for rare bird sighting of Gyrfalcon north of Cone Marsh, 1986	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1986-12-28	1993-09-07	Rare birds documentation form	Records Committee review of a Gyrfalcon north of Cone Marsh in Louisa County, IA on December 28, 1986. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.	Dwyer, Timothy L.	Gyrfalcon	Cone Marsh Wildlife Management Area	About 1/2 mile North of Cone Marsh on Hwy G-28 in Louisa Co., Iowa	Open country, scattered small trees, weedy fence rows.	The documentation form by Timothy L. Dwyer is the only one submitted and forms the basis of this record. \| Elimination of similar species: Prairie Falcon is smaller, browner + has black axillars. Peregrine Falcon is smaller, has more pointed wings and has a much more distinctive head pattern. Goshawk's head pattern is different, is whiter below in gray plumage and has shorter wings. Northern Harrier is smaller, also has a white rump and holds wings in a dihedral, this bird didn't. \| The original documentation form event lasted from approximately 15:00:00/15:03:00.	Iowa Ornithologists' Union \| MS 166	9	4
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 Gyrfalcon at Bettendorf, 1992.	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1992-01-20	1994-10-18	Rare birds documentation form	Records Committee review of a Gyrfalcon at Bettendorf in Scott County, IA on January 20, 1992. Includes a record review document with votes and a documentation form submitted to the committee.	Timper, Edward	Gyrfalcon	Bettendorf	Devils Glen & Middle Road, Bettendorf, Hwy Z30 & Indiana Ave, Rural Scott Cty.	Residential with fields, and rural farm area with picked fields	The documentation form by Edward Timper is the only one submitted and forms the basis of this record. \| Elimination of similar species: I am a master falconer, and have handled and flown many large falcons, including gyrfalcons, peregrines, prairie falcons, and large exotics such as saker falcons and lanners. I am positive that this is a gerfalcon [sic]. \| The original documentation form event lasted from 13:45:00/15:15:00.	Iowa Ornithologists' Union \| MS 166	9	4
Records Committee review for rare bird sighting of Gyrfalcon at Kettleson Hogsback, 1993	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1993-09-25	1995-07-08	Rare birds documentation form	Records Committee review for a Gyrfalcon at Kettleson Hogsback in Dickinson County, IA on September 25, 1993. Includes a record review document with votes, an article in Iowa Bird Life, and five documentation forms submitted to the committee.	Schantz, Tim	Gyrfalcon	Kettleson Hogsback Wildlife Management Area	East of Kettleson Hogback entrance, Dickenson [sic] Co., Iowa		The documentation form by Tim Schantz is the earliest and the one that forms the basis of this record. Other documentation forms by Maridel Jackson, Ross Silcock, Jane R. Clark, and Jim Sinclair were submitted later. Other observers include John Cecil, Eugene Armstrong, and Eloise Armstrong. \| Elimination of similar species: Northern Goshawk- Although Goshawks have been known to show pointed wings, they are never as pointed as a Falcon's. I have seen many Northern Goshawks and jizz alone would rule this one out. I saw no barring on the tail. One of the prime field marks on a Goshawk are the bright white undertail coverts which this bird did not have. The bird in question also lacked a dark crown. Peregrine Falcon- Size. No dark helmet. Jizz (mentioned above). The bird lacked overall contrast of a Peregrine Falcon. Juveniles would be brown. Prairie Falcon- Color. Prairies are a brown bird in all plumages. The underwing was uniform with no black axillaries. Habitat. Prairies feed almost exclusively on small mammals. \| The original documentation form event occurred around 15:30:00.	Iowa Ornithologists' Union \| MS 166	9	4
Records Committee review for rare bird sighting of Gyrfalcon in Hanover Township in Crawford County, 1993	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1993-10-17	1995-07-08	Rare birds documentation form	Records Committee review for a Gyrfalcon at Hanover Township in Crawford County, IA on October 17, 1993. Includes a record review document with votes, a letter about reporting the sighting from Jim Fuller to Dan Eiten on October 29, 1993, and a documentation form submitted to the committee.	Eiten, Dan	Gyrfalcon	Hanover Township	Hanover Twp Crawford County IA 6 1/2 NW Denison	Near Bean field on Field Fencepost	The documentation form by Dan Eiten is the only one submitted and forms the basis of this record. Other observers include Arlan Gierstorf. \| The original documentation form event occurred around 14:00:00.	Iowa Ornithologists' Union \| MS 166	9	4