| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9k649w4g |
| Type |
Text |
| Description |
Records Committee review for a Lesser Black-backed Gull near Jester Park at Saylorville Reservoir in Polk County, IA on November 15, 1988. Includes a record review document with votes and a documentation form submitted to the committee. |
| Related Genres |
Administrative records Field notes |
| Sort Date |
1988-11-15 - 1993-08-04 |
| People / Organizations |
|
| Time |
3:44 PM |
| 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 |
11 |
| Folder |
5 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Dinsmore, Stephen J. |
| Contributors |
Iowa Ornithologists' Union Records Committee |
| Topics |
Bird watching Ornithology Ornithology--Societies, etc |
| Birds |
Lesser Black-backed Gull |
| Locations |
Jester Park |
| Map |
|
| Verbatim Locality |
Saylorville Reservoir, Polk Co.-near Jester Park |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
resting on mud bar with thousands of other gulls |
| Extent |
3 pages |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
1 |
| Occurrence Remarks |
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Bery Engebretsen. | Elimination of similar species: The size (larger than Ring-billed Gull, smaller than Herring Gull) eliminates all Gulls except Herring, California, and Lesser Black-backed gulls. The mantle was much too dark for a Herring Gull. Separation from California Gull is much more difficult. Obviously, the mantle color of this bird was much too dark for a California Gull, and the legs were more yellow than the legs of a California Gull. | The original documentation form event lasted from 15:44:00/16:38:00. |
| Occurrence Status |
present |
| Field Number |
1988-29 |
| Event Remarks |
Viewing Conditions: Viewing conditions were excellent with the sun behind me. Estimated viewing distance was 500 yards. I used a Buschnell 20-45x spotting scope. |
| Supporting Documentation |
National Geographic Society. National Geographic field guide to the birds of North America. Washington (DC): National Geographic Society. |
| Date Digital |
31 May 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
