| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9sj19t76 |
| Type |
Text |
| Description |
Records Committee review for three Thayer's Gulls at Coralville Dam in Johnson County, IA on November 8, 1981. Includes a record review document with votes, correspondence and commentary about the sighting, summary of the review, and a documentation form submitted to the committee. |
| Related Genres |
Administrative records Correspondence Field notes |
| Sort Date |
1981-11-08 - 1993-08-26 |
| People / Organizations |
|
| Time |
8:10 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 |
3 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Moore, Francis L. |
| Contributors |
Paulson, Dennis R. Dunn, Jonathan L. Lehman, Paul Newlon, Michael C. Wahl, Terrence R. Iowa Ornithologists' Union Records Committee |
| Topics |
Bird watching Ornithology Ornithology--Societies, etc |
| Birds |
Thayer's Gull |
| Locations |
Coralville Dam |
| Map |
|
| Verbatim Locality |
Coralville Reservoir |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
Open wate [sic] near small sandy beach near the Dam area, Johnson County |
| Extent |
8 pages |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
3 |
| Occurrence Remarks |
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Russell Hays, Tom Kent, Tom Shires, Tom Staudt, and many unidentified other observers. | Elimination of similar species: Ring-billed Gull and Herring Gull, see above. The Ring-billed Gulls were seen in direct contrast to these three birds and were definitely much smaller birds. The Herring Gulls (first year birds) that I have seen have more of a contrast between the rump and back and upper wing surfaces and none that I remember showed the whitish trailing edge on the tail. [...] The three birds seen were about the size of Herring Gulls in typical first year plumage. They were obviously large gulls of the genus Larus with a noticeably larger size than the Ring-billed Gulls and one Bonaparte's Gull that were next to the three larger birds. [...] There were no Herring Gulls nearby with which to make a comparison of size and coloration. The bills of all three gulls were black did not seem as heavy or bulky as the bill of a Herring Gull. | The original documentation form event lasted from 08:10:00/09:30:00. |
| Occurrence Status |
present |
| Field Number |
1981-15 |
| Event Remarks |
Viewing Conditions: Lighting was bright overcast to sunny; birds seen at approx. 30 yards on beach to 1/4 mile on the water; viewed through 7x35mm B + L Roof Prism Binoculars, 20x and 40x eye pieces on Bushnell Spacemaster telescope, and through 750mm Celestron telescope. |
| Supporting Documentation |
General notes. Iowa Bird Life. 1981; 51(2). | Lehman, P. Identification of Thayer's gulls in the field. Birding. 1980; 12(6); 198. |
| Date Digital |
30 May 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
