| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9qn5zd5n |
| Type |
Text |
| Description |
Rare bird documentation form for a Thayer's Gull southeast of Jolly Roger Marina at Coralville Reservoir in Johnson County, IA on December 19, 1993. |
| Related Genres |
Field notes |
| Sort Date |
1993-12-19 |
| People / Organizations |
|
| Time |
10:45 AM |
| Rights |
This Item is protected by copyright and/or related rights. However, for this Item, 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 |
34 |
| Folder |
35 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Pinkston, Randall, 1956- |
| Contributors |
|
| Topics |
Birds--Identification Ornithology Rare birds |
| Birds |
Thayer's Gull |
| Locations |
Jolly Rogers Campground |
| Map |
|
| Verbatim Locality |
Coralville Reservoir (1/4 - 1/2 mile southeast of Jolly Roger Marina), Johnson County, Iowa |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
|
| Extent |
1 page |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
1 |
| Occurrence Remarks |
The documentation form by Randall Pinkston is the only one submitted and forms the basis of this record. | Elimination of similar species: Contrasted with first-winter Herring Gull above. First-winter Iceland typically much paler, especially the uppersurface of the primaries which are paler than the rest of the mantle, and Iceland should show mottling in the tertials and tail band. I suppose I cannot exclude a heavily-pigmented 'Kumlien's' Gull or an Iceland-Thayer's intergrade as described in Kevin Zimmer's Birding article. Both species are apparently highly variable. | The original documentation form event lasted from 10:45:00/11:15:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: Cloudy, calm. Observed from 50-100 meters with Zeiss 10x40 binocular. |
| Supporting Documentation |
Zimmer K. Plumage variation in 'Kumlien's' Iceland gull. Birding. 1991; 23: 254-269. |
| Date Digital |
15 Dec 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
