Documents • Iowa State University • Avian Archives of Iowa Online

Title	Genres	Topics	Date (Start)	Date (End)	Type	Description	Creator/Author	Birds	Locations	Locality	Habitat	Remarks

Rare bird documentation form for Peregrine Falcon in Western Sioux County, 1990	Field notes	Birds--Identification Ornithology Rare birds	1990-10-24	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon in Western Sioux County, IA on October 24, 1990.	Van Dyk, John, 1936-	Peregrine Falcon	Sioux County	Western Sioux County (about 11 miles straight west of Sioux Center)		The documentation form by John Van Dyk is the only one submitted and forms the basis of this record. \| Elimination of similar species: This bird was most definitely not a Prairie Falcon. Its slaty upper parts and very dark head markings completely rule out such a possible confusion. \| The original documentation form event lasted for five minutes or so.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Prairie Falcon at St. Johns Township in Harrison County, 1981	Field notes	Birds--Identification Ornithology Rare birds	1981-10-10	1981-10-11	Rare birds documentation form	Rare bird documentation form for a Prairie Falcon at St. Johns Township in Harrison County, IA on October 10, 1981.	Robinson, John C., 1959-	Prairie Falcon	Township of Saint John	1 mile west of Missouri Valley, Iowa; Harrison Co., St. Johns Twsp., Sect. 17.	Open agricultural land; few trees; Winter wheat field (growth of winter what less than 4 inches tall).	The documentation form by John C. Robinson is the only one submitted and forms the basis of this record. Other observers include Joe Schaufenbuel. \| Elimination of similar species: Peregrine Falcon: this species lacks black axillars and white superciliary stripe; moustache is thicker on this species. Merlin: this species is much smaller and lacks moustache and black facial pattern. Gyrfalcon: this species is larger and lacks superciliary stripe and black axillars. \| The original documentation form event lasted from 15:50:00/16:50:00.	Iowa Ornithologists' Union \| MS 166	33	35
Rare bird documentation form for Prairie Falcon at Iowa State University Beef Farm, 1978	Field notes	Birds--Identification Ornithology Rare birds	1978-05-01	1978-05-16	Rare birds documentation form	Rare bird documentation form for a Prairie Falcon at Iowa State University Beef Farm in Story County, IA on May 1, 1978.	Heagy, Patricia A.	Prairie Falcon	Story County	Iowa, Story County, T84N, R24W, Sec 30; ISU Beef Farm	wooded pasture, surrounded by grassy pasture, cropland, and woods. Open woodland pasture along Onion Creek	The documentation form by Patricia A. Heagy is the only one submitted and forms the basis of this record. \| Elimination of similar species: American Kestrel - smaller and without dark axillar. They also have rusty backs, and do not have complete tail bands. Peregrine Falcon - has a darker face pattern and a slate-colored back. \| The original documentation form event lasted from 09:40:00/09:41:00.	Iowa Ornithologists' Union \| MS 166	33	35
Rare bird documentation form for Prairie Falcon at northern Fremont County, 1977	Field notes	Birds--Identification Ornithology Rare birds	1977-10-16	1977-10-20	Rare birds documentation form	Rare bird documentation form for a Prairie Falcon at northern Fremont County, IA on October 16, 1977.	Silcock, W. Ross	Prairie Falcon	Fremont County	northern Fremont Co.	river-bottom farmland, partly harvested corn & bean fields beside west Nishnabotna River	The documentation form by W. Ross Silcock is the only one submitted and forms the basis of this record. \| Elimination of similar species: Immature Peregrine - does not have dark axillars & underwing linings. Adult Peregrine - is grey above, not brown. Female Am. Kestrel - not as large, no dark axillars. \| The original documentation form event lasted from 10:00:00/10:05:00.	Iowa Ornithologists' Union \| MS 166	33	35
Rare bird documentation form for Peregrine Falcon at Tomahawk Marsh, 1994	Field notes	Birds--Identification Ornithology Rare birds	1994-09-24	1994-11-30	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Tomahawk Marsh in Sac County, IA on September 24, 1994.	Thelen, Ed	Peregrine Falcon	Tomahawk Marsh Wildlife Management Area	Tomahawk Marsh Sac County	Marsh, grain fields	The documentation form by Ed Thelen is the only one submitted and forms the basis of this record. Other observers include Rob Thelen. \| Elimination of similar species: Praire [sic] falcon eliminated by dark malar strip and also by light colored axillars. Merlin eliminated by its size.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Black Hawk Lake, 1994	Field notes	Birds--Identification Ornithology Rare birds	1994-05-15	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Ice House Point at Black Hawk Lake in Sac County, IA on May 15, 1994.	Stone, Dale	Peregrine Falcon	Black Hawk Lake	Ice House Point, Black Hawk Lake, Lake View, Iowa		The documentation form by Dale Stone is the only one submitted and forms the basis of this record. \| Elimination of similar species: It was much larger than its relative the American Kestrel. By its size, strong patterned "sideburns," and streamlined look in-flight, I determined it to be a Peregrine Falcon. \| The original documentation form event lasted from 20:00:00/20:15:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Sioux Center, 1993	Field notes	Birds--Identification Ornithology Rare birds	1993-09-16	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Sioux Center in Sioux County, IA on September 16, 1993.	Van Dyk, John, 1936-	Peregrine Falcon	Sioux Center	Sioux Center, IA 51250		The documentation form by John Van Dyk is the only one submitted and forms the basis of this record. \| Elimination of similar species: Its clear head markings definitely rule out a Prairie Falcon (which is now becoming a regular visitor here in winter), and the bird was much too large to be a smaller (e.g., Merlin). \| The original documentation form event occurred for around five minutes.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Davenport, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-12-20	1992-12-22	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Davenport in Scott County, IA on December 20, 1992.	Blevins, Brian L.	Peregrine Falcon	Davenport	Downtown Davenport, Masonic Temple (Scott Co., IA)	Inner City of Davenport overlooking River	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins and Lewis Blevins. \| Elimination of similar species: Merlin - By size and full head cap. Gyrfalcon - By size and by full head cap. \| The original documentation form event lasted from 15:45:00/16:15:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Ames, 1992	Field notes	Birds--Identification Ornithology Rare birds	1992-08-01	1992-08-04	Rare birds documentation form	Rare bird documentation form for two Peregrine Falcons at Ames in Story County, IA on August 1, 1992.	Oesterreich, Wolfgang	Peregrine Falcon	Ames	downtown Ames		The documentation form by Wolfgang Oesterreich is the only one submitted and forms the basis of this record. \| The original documentation form event lasted from 15:20:00/16:05:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Runnells Wildlife Area, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-09-14	1991-12-01	Rare birds documentation form	Rare bird documentation form for two Peregrine Falcons at Runnells Wildlife Area in Warren County, IA on September 14, 1991.	Porter, Diane C.	Peregrine Falcon	Runnells Overlook	Runnells Wildlife Area	Mud flats	The documentation form by Diane Porter is the only one submitted and forms the basis of this record. Other observers include Jim Sinclair, Jim Fuller, Peter Petersen, and others. \| Elimination of similar species: Birds were too big and grey for kestrels; too big and too much face pattern for merlins; no black axillaries and too dark for prairie falcons; too small, slim, and dark for gyrfalcons. \| The original documentation form event occurred in the mid morning.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at West Spencer, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-05-05	1991-06-05	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at West Spencer in Clay County, IA on May 5, 1991.	Schoenewe, Lee A.	Peregrine Falcon	Spencer	West Spencer, Clay Co., IA.	Wooded floodplain between Little Sioux & Ocheydan Rivers	The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. Other observers include Nancy P. Schoenewe. \| Elimination of similar species: Prairie Falcon - lacked dark underwing patch & had dark head & moustache. \| The original documentation form event lasted from 18:15:00/19:00:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Mason City, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-02-28	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Mason City in Cerro Gordo County, IA on February 28, 1991.	Walter, Janice L.	Peregrine Falcon	Mason City	Mason City		The documentation form by Jan L. Walter is the only one submitted and forms the basis of this record. Other observers include Jim B. Walter. \| Elimination of similar species: Size was much larger than the Kestrels we're used to seeing \| The original documentation form event lasted for twenty minutes in the late afternoon.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Fairfield, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-01-18	1991-03-01	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Fairfield in Jefferson County, IA on January 18, 1991.	Alexander, Carol Ann	Peregrine Falcon	Fairfield	Jefferson County, Fairfield, IA - Adema St., Jefferson St, & "D" St.	Residential area, 30 degrees, snow on ground.	The documentation form by Carol Ann Alexander is the only one submitted and forms the basis of this record. Other observers include Richard M. Alexander. \| Elimination of similar species: American Kestrel and Merlin. Both too small (about 6 inches smaller). Also no other bird could dive at that speed. \| The original documentation form event lasted from 12:35:00/12:35:35.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Saylorville Reservoir, 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-09-21	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Saylorville Reservoir in Polk County, IA on September 21, 1985.	Myers, Robert K.	Peregrine Falcon	Saylorville Lake	Saylorville Reservoir	Large timber lined lake. This area seems to be a good migratory path for raptors.	The documentation form by Robert K. Myers is the only one submitted and forms the basis of this record. Other observers include Francis Moore. \| Elimination of similar species: Bird was too big for Merlin and too dark above for Prairie Falcon and basic shape, color and head pattern eliminates other possible hawks. \| The original documentation form event lasted from 11:30:00/11:31:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Prairie Falcon at Marshalltown, 1990	Field notes	Birds--Identification Ornithology Rare birds	1990-04-04	1990-04-13	Rare birds documentation form	Rare bird documentation form for a Prairie Falcon at Marshalltown in Marshall County, IA on April 4, 1990.	Proescholdt, Beth	Prairie Falcon	Marshalltown	Marshalltown, Iowa	Hyvee parking lot !!	The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. \| Elimination of similar species: Not a Merlin because it wasn't dark underneath with strongly barred tail - only a Prairie Falcon because of its dark axillars & underwing coverts. \| The original documentation form event lasted from 11:25:00/11:26:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon west of New Albin, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-11-22	1986-11-24	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon west of New Albin in Allamakee County, IA on November 22, 1986.	Moore, Francis L.	Peregrine Falcon	New Albin	2-3 mi. West of New Albin on A-26 county road - Allamakee Co.	Overhead along Limestone Bluffs in N.E. Iowa Along A-26	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Tom Kent and Robert Cecil. \| Elimination of similar species: Falcon shape eliminates Red-tailed Hawk, size & color eliminates Merlin, light axillaries eliminates Prairie Falcon. \| The original documentation form event lasted in the late AM.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon west of New Albin, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-11-22	1986-11-23	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon west of New Albin at Allamakee County, IA on November 22, 1986.	Kent, Thomas H. (Thomas Hugh), 1934-	Peregrine Falcon	New Albin	Upper Iowa River Valley ~ 3 mi west of New Albin, Allamakee Co, IA	Unglaciated hilly river valley	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Francis Moore and Bob Cecil. \| Elimination of similar species: Too large and light for Merlin or Kestrel. Light axillaries exclude Prairie Falcon. Two toned effect exclude Gyrfalcon. There was only a mild breeze, so we were not looking at a buteo or accipiter distorted by the wind. \| The original documentation form event lasted from approximately 12:30:00/12:32:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Allamakee County, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-11-22	1986-11-27	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Allamakee County, IA on November 22, 1986.	Cecil, Robert I.	Peregrine Falcon	Allamakee County	Allamakee Co. (I think)	Bluff overlooking wooded river valley.	The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. Other observers include Tom Kent and Francis Moore. \| Elimination of similar species: Prairie: No dark axillaries. Merlin: Size. \| The original documentation form event occurred around 12:30:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon east of McCallsburg, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-10-01	1986-10-11	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon east of McCallsburg in Story County, IA on October 1, 1986.	Proescholdt, Beth	Peregrine Falcon	McCallsburg	north central Story Co., east of McCallsburg	above field along #E18 road	The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Other observers include Mark Proescholdt. \| Elimination of similar species: Pigeon, other hawks - at first sighting this bird looked like a pigeon - but at once we could see the large falcon shape & its strong rowing flight as it flew away, also its coloring & helmet \| The original documentation form event lasted from 07:50:00/07:51:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Saylorville, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-10-01	1986-10-11	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Saylorville in Polk County, IA on October 1, 1986.	Proescholdt, Beth	Peregrine Falcon	Saylorville	Saylorville - Polk Co. - below dam	tall cottonwood in river bottom timber by 2 ponds	The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Other observers include Mark Proescholdt. \| Elimination of similar species: This was so definitely a Peregrine there was no similar species. \| The original documentation form event lasted from 13:30:00/14:45:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at George Wyth State Park, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-09-28	1986-09-29	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at George Wyth State Park in Black Hawk County, IA on September 28, 1986.	Moore, Francis L.	Peregrine Falcon	George Wyth Memorial State Park	George Wyth S.P., Black Hawk Co.	Flying down river over Cedar River on boundry [sic] of G.W.S.P.	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. \| Elimination of similar species: Merlin would be darker on breast and lacks helmeted look this bird had. Prairie Falcon would be sandy brown overall, this bird was not. \| The original documentation form event lasted from 10:30:00/10:31:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Grammer Grove County Wildlife Area, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-09-20	1986-09-24	Rare birds documentation form	Rare bird documentation form for two Peregrine Falcons at Grammer Grove County Wildlife Area in Marshall County, IA on September 20, 1986.	Proescholdt, Mark	Peregrine Falcon	Grammer Grove County Wildlife Area	Grammer Grove Co. Wildlife Area - (Marshall Co.)	Wooded ridge and riverbottom woods along Iowa River	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt. \| Elimination of similar species: A Merlin is much smaller and lacks the heavy black sideburns of a Peregrine. \| The original documentation form event lasted from 16:00:00/16:00:10 and 16:30:00/16:30:08.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Grammer Grove County Wildlife Area, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-09-20	1986-09-24	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Grammer Grove County Wildlife Area in Marshall County, IA on September 20, 1986.	Proescholdt, Mark	Peregrine Falcon	Grammer Grove County Wildlife Area	Grammer Grove Co. Wildlife Area - (Marshall Co.)	Wooded ridge and river bottom woods along Iowa River	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt. \| Elimination of similar species: A Merlin is much smaller like the size of Sharp-shinned Hawks which we had been seeing that day. A Prairie Falcon is rare for Iowa and especially central Iowa. Also, a Prairie Falcon would most likely not be seen anywhere in Iowa at this season but later in fall and winter. \| The original documentation form event lasted from 15:15:00/15:15:10.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at northeast Boone County, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-04-23	1986-05-15	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at northeast Boone County on county line with Hamilton County, IA on April 23, 1986.	Proescholdt, Beth	Peregrine Falcon	Boone County	n.e. Boone County (on county line with Hamilton Co)	marshy pasture of several acres, on both sides of road	The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Other observers include Mark Proescholdt, Ramona Sommerlot, and Carol McMillen. \| Elimination of similar species: another falcon - this one too large; a buteo - not buteo shaped & flying much faster than a buteo with its long pointed wings. \| The original documentation form event lasted from 14:25:00/14:26:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Peregrine Falcon at Saylorville Reservoir, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-03-20	1986-04-03	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Saylorville Reservoir in Polk County, IA on March 20, 1986.	Dinsmore, Stephen J.	Peregrine Falcon	Saylorville Lake	marina of the Saylorville Reservoir, Polk Co.	sitting on top of a large tower	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. \| Elimination of similar species: Merlin eliminated by size and lack of a dark hood. Prairie Falcon eliminated by lack of dark axillaries. \| The original documentation form event occurred at 16:00:00 for several minutes.	Iowa Ornithologists' Union \| MS 166	33	34