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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 Red Knot west of Huxley, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-09-03
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for two Red Knots west of Huxley in Story County, IA on September 3, 1990. Includes a record review document with votes and six documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Huxley
|
flooded field 1.2 mi. west of Huxley, Story Co.
|
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Pam Allen, Jim Dinsmore (2x), Mark Proescholdt, Beth Proescholdt, and Tim Schantz were submitted later. Other observers include Jim Fuller, Ann Johnson, Reid Allen, and unidentified other observers. | Elimination of similar species: The fairly large size and gray and white plumage eliminates all shorebirds except Sanderling and winter-plumaged Dunlin. Sanderling is eliminated by smaller size and different bill shape. Winter-plumaged Dunlin is eliminated by different bill shape, slightly smaller size, and different tail pattern. | The original documentation form event lasted from 17:20:00/18:48:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
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Records Committee review for rare bird sighting of Red Knot at Sandpiper Beach at Saylorville Reservoir, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-09-03
|
1993-07-21
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Sandpiper Beach at Saylorville Reservoir in Polk County, IA on September 3, 1989. Includes a record review document with votes and eight documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Sandpiper Recreation Area
|
Sandpiper Beach area of Saylorville Res., Polk Co.
|
sandy/rocky beach
|
The documentation form by Steve Dinsmore is the one that forms the basis of this record. Other documentation forms by Jim Dinsmore, Bob Myers, Robert Cecil, Ann Johnson, Jim Fuller, Michael K. Thomas, and Mark Proescholdt were submitted. Other observers include Dennis Thompson, Betsy Myers, Eugene Armstrong, Eloise Armstrong, and many unidentified observers. | Elimination of similar species: The large size should eliminate all peeps. The bird was also larger than Sanderlings in direct comparison. Otherwise, the bill shape and dull yellow legs would eliminate Sanderling and Dunlin. | The original documentation form event lasted from 06:53:00/07:41:00 and 08:15:00/09:35:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records committee review for rare bird sighting of Red Knot at Union Slough National Wildlife Refuge, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-08-31
|
1993-07-21
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Union Slough National Wildlife Refuge in Kossuth County, IA on August 31, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Kenne, Matthew C.
|
Red Knot
|
Union Slough National Wildlife Refuge
|
Union Sl. Nat. Wild Refuge north of Titonka Blacktop
|
mudflats with puddles + pools
|
The documentation form by Matthew Kenne is the only one submitted and forms the basis of this record. | Elimination of similar species: This bird had a different bill than any shorebird - I've ever seen. No other shore bird has a red breast. (Ok - curlew sand.) | The original documentation form event lasted from 09:15:00/09:18:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Union Slough National Wildlife Refuge, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-08-05
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Union Slough National Wildlife Refuge in Kossuth County, IA on August 5, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Union Slough National Wildlife Refuge
|
Union Slough NWR, Kossuth Co.
|
feeding on large mud area with thousands of shorebirds
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The reddish color on the underparts eliminates all shorebirds except Red Knot, Curlew Sandpiper, and Sanderling. The pale legs and bill shape eliminate Curlew Sandpiper. The larger size, bill shape, and pale legs eliminate Sanderling. | The original documentation form event lasted from 08:40:00/10:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Oak Grove Beach at Saylorville Reservoir, 1986
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-08-05
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for two Red Knots at Oak Grove Beach at Saylorville Reservoir in Polk County, IA on August 5, 1986. Includes a record review document with votes, summary of the review, an article of Iowa Bird Life, and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Oak Grove Recreation Area
|
Oak Grove Beach, Saylorville Reservoir
|
sandy beach along lake
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Steve Dinsmore (later sighting) and Bob Myers were submitted later. | Elimination of similar species: Only two other sandpipers have reddish underparts-Curlew Sandpiper and Sanderling. Bill shape eliminates Curlew Sandpiper. The larger size, extent of reddish underparts, leg color, white rump, and wing stripe confined to the secondaries eliminates Sanderling. | The original documentation form event lasted from 07:31:00/07:57:00 and 08:17:00/08:26:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Fisher Lake, 1985
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-09-19
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Fisher Lake in Polk County, IA on September 19, 1985. Includes a record review document with votes and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Fisher Lake
|
Fisher Lake, n. of Des Moines, Polk Co., IA
|
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Robert K. Myers and Jim Fuller were submitted later. Other observers include Eugene Armstrong, Cal Knight, and Jane Fuller. | Elimination of similar species: Fall Dowitchers have longer bills and legs, a darker tail, longer neck, darker back, and darker underparts. Sanderling is smaller, much whiter, has bolder wing stripe and lacks a white eye stripe. (I saw several later in the day.) | The original documentation form event lasted from 17:00:00/18:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Hampton, IL, 1984
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-09-01
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Red Knot at Hampton in Rock Island County, IL on September 1, 1984. Includes a record review document with votes and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Red Knot
|
Hampton
|
Location: Hampton. County: Rock Island
|
General: Mississippi River Specific: Mudflat
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Mary Lou Petersen, Kelly McKay, and Larry Linden. | Elimination of similar species: Larger and greyer than nearby Pectorals, less streaking on chest. Too small for Reeve, also too grey & legs greenish, Tail & rump color different | The original documentation form event lasted from 08:05:00/08:25:00 and 14:30:00/15:00:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Hendrickson Marsh, 1984
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-09-15
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Red Knot at Hendrickson Marsh in Story County, IA on September 15, 1984. Includes a record review document with votes, an article in Iowa Bird Life and five documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Red Knot
|
Hendrickson Marsh Lake
|
Hendrickson Marsh, Story Co.
|
mudflat area in drained section of marsh
|
The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Hank Zaletal, Jim Dinsmore, Mark Proescholdt, and Paul Martsching were submitted later. Other observers include Joe Schaufenbuel. | Elimination of similar species: peeps sp. because of smaller size, lack of gray scaly back, lack of white stripe above eye and lack of black wing tips with white wing stripe. Sanderling was eliminated by smaller size, unscaly back, larger amount of black on wings and lack of necklace on breast. Eliminated from other shore birds by combination of chunky short legged appearance, white wing stripe, necklace on breast and grayish, scaly appearance. | The original documentation form event lasted from 13:00:00/18:30:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
1
|
|
Records Committee review for rare bird sighting of Red Knot at Sand Point at Coralville Reservoir, 1984
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-09-16
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Red Knot at Sand Point in Coralville Reservoir in Johnson County, IA on September 16, 1984. Includes a record review document with votes and four documentation forms submitted to the committee.
|
Newlon, Michael C.
|
Red Knot
|
Sand Point
|
Sand Point, Coralville Res., Johnson Co., Iowa
|
mudflats
|
The documentation form with an attachment by Michael Newlon is the one that forms the basis of this record. Other documentation forms by Thomas H. Kent and two documentation forms for two separate sightings by Carl Bendorf. | Elimination of similar species: Build, pale wings + color pattern, feather pattern on back/coverts distinctive. [...] No other calidrine sandpiper likely to be found in Iowa combines the coloration, size, and proportions of the Knot. The only species that combine the overall grey coloration and the heavy straight bill are Sanderling, much smaller, and Willet, much larger and longer-legged, with blue-grey rather than black bill and legs. The other shorebirds that are remotely similar are the Tattlers, which have more slender bills and paler legs; basic-plumaged Surfbird, which has a shorter, thicker bill, yellow at base, pale legs, and less-distinct face-pattern (but similar pattern on coverts/ scapulars/tertials); Great knot, which is supposed to lack a distinct supercilium, have round black spots on chest and flanks, black upperparts, a longer, more slender bill. .
|
Iowa Ornithologists' Union | MS 166
|
10
|
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 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 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 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 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 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 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 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 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 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 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
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Record Committee review for rare bird sighting of Ferruginous Hawk west of Conesville, 1989
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1989-04-29
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1993-08-05
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Rare birds documentation form
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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.
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Petersen, Peter C.
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Ferruginous Hawk
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Conesville
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1 mi. W. conesville edge of Muscatine and Louise Cos., IA
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cultivated fields
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Benton Township in Fremont County, 1989
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1989-01-17
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1993-08-05
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Rare birds documentation form
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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.
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Silcock, W. Ross
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Ferruginous Hawk
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Benton Township
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Benton TWP, Fremont Co., IA.
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Open Missouri riverbottom; soybean stubble fields
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk at Red Rock Reservoir, 1989
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1989-01-02
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1993-08-05
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Rare birds documentation form
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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.
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Johnson, Ann
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Ferruginous Hawk
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Lake Red Rock
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Lake Red Rock, Marion Co, IA
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pasture with wooded draw to the south
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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Records Committee review for rare bird sighting of Ferruginous Hawk east of Osage, 1988
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1988-03-13
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1993-03-16
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Rare birds documentation form
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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.
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Hartogh, Mary Jo
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Ferruginous Hawk
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Osage
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9 mi. E of Osage along a gravel road-Mitchell Co.
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Hayfield near a road
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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.
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Iowa Ornithologists' Union | MS 166
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9
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1
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