| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9b27pt8n |
| Type |
Text |
| Description |
Records Committee review for a California Gull at Oak Grove Beach at Saylorville Reservoir in Polk County, IA on September 8, 1990. Includes a record review document with votes and the article California Gull at Saylorville Reservoir in Iowa Bird Life 61:20 by Stephen Dinsmore reviewed by the committee. |
| Related Genres |
Administrative records Clippings (information artifacts) Field notes |
| Sort Date |
1990-09-08 - 1993-07-17 |
| People / Organizations |
|
| Time |
7:45 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 |
11 |
| Folder |
1 |
| 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 |
California Gull |
| Locations |
Oak Grove Recreation Area |
| Map |
|
| Verbatim Locality |
[...] Oak Grove Beach Recreation Area at Saylorville Reservoir, Polk County. |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
|
| Extent |
2 pages |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
1 |
| Occurrence Remarks |
The article by Stephen J. Dinsmore forms the basis of this record. | Elimination of similar species: [...]The bird was similar in size to the largest Ring-billed Gulls, but slightly larger than others. I approached closer and noted that, when compared to a Ring-billed Gull, the bird had duller yellow legs, a stouter bill with black and red spots near the tip of the lower mandible, and a darker gray mantle. [...] The bird was slightly larger than most of the Ring-billed Gulls, although one or two of the biggest Ring-billed Gulls were as large as the bird I was studying. Proportionately, the bird was heavier and larger-headed than a Ring-billed Gull. [...] I estimated the mantle color to be about midway between those of Ring-billed Gull and a Lesser Black-backed Gull. [...] The bill was heavier than the bill of a Ring-billed Gull and had a distinct gonys. The legs were pale gray-green, unlike the bright yellow legs of a Ring-billed Gull. Leg length appeared similar to a Ring-billed Gull. | The original documentation form event lasted from 07:45:00/09:27:00. |
| Occurrence Status |
present |
| Field Number |
1990-33 |
| Event Remarks |
|
| Supporting Documentation |
American Birds. | Petersen PC. California gull at Davenport, first accepted Iowa record. Iowa Bird Life 1991; 61. 121-22. | Kent TH. First-winter California gull at Coralville Reservoir. Iowa Bird Life 1991; 61. 123-24. |
| Date Digital |
29 May 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed/flatbed |
