| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9cf9j88p |
| Type |
Text |
| Description |
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. |
| Related Genres |
Administrative records Field notes |
| Sort Date |
1989-01-02 - 1993-08-05 |
| People / Organizations |
|
| Time |
9:00 AM |
| Rights |
This complex item has mixed rights protection. Portions in which Iowa State University is the copyright holder are made available for non-commercial use, including sharing and adapting the work. No permission is required for non-commercial use to these portions so long as attribution is provided. All other uses of these portions, including commercial, require permission from the Iowa State University Library Special Collections and University Archives (archives@iastate.edu). (CC BY-NC 4.0 International). Portions in which Iowa State University is not the copyright holder are believed to be under copyright, but either (a) no rights-holder(s) have been identified or (b) one or more rights-holder(s) have been identified but none have been located. If you have any information that can contribute to identifying or locating the rights-holder(s) please notify the Iowa State University Library Digital Initiatives Program (digital@iastate.edu). (Rightsstatements.org InC-RUU 1.0). The original object is available at the Iowa State University Library Special Collections and University Archives (archives@iastate.edu). |
| Data Access Rights |
http://vertnet.org/resources/norms.html |
| Data License |
http://creativecommons.org/publicdomain/zero/1.0 |
| Collection |
Iowa Ornithologists' Union | MS 166 |
| Box |
9 |
| Folder |
1 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Johnson, Ann |
| Contributors |
Iowa Ornithologists' Union Records Committee |
| Topics |
Bird watching Ornithology Ornithology--Societies, etc |
| Birds |
Ferruginous Hawk |
| Locations |
Lake Red Rock |
| Map |
|
| Verbatim Locality |
Lake Red Rock, Marion Co, IA |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
pasture with wooded draw to the south |
| Extent |
4 pages |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
1 |
| Occurrence Remarks |
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. |
| Occurrence Status |
present |
| Field Number |
1989-04 |
| Event Remarks |
Viewing Conditions: Sunny day with sun at back and to the left. Observed at an estimated 200', judging from electric poles, through 7x26 binoculars. |
| Supporting Documentation |
National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Farrand J. Audubon society master guide to birding. New York: Alfred A. Knopf. | Clark W and Wheeler BK. A Field Guide to Hawks of North America. New York: Houghton Mifflin Harcourt. | Wilson B. Identification of Ferruginous Hawks. Iowa Bird Life. 56(100). | Connor J. The Complete birder: a guide to better birding. New York: Houghton Mifflin Harcourt. |
| Date Digital |
17 May 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
