| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9542jb41 |
| Type |
Text |
| Description |
Rare bird documentation form for a Great Black-backed Gull at Saylorville Reservoir in Polk County, IA on November 7, 1987. |
| Related Genres |
Field notes |
| Sort Date |
1987-11-07 - 1987-11-26 |
| People / Organizations |
|
| Time |
10:15 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 |
38 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Dinsmore, Stephen J. |
| Contributors |
Fix, Andrew S. |
| Topics |
Birds--Identification Ornithology Rare birds |
| Birds |
Great Black-backed Gull |
| Locations |
Saylorville Lake |
| Map |
|
| Verbatim Locality |
Saylorville Reservoir, Polk Co.-off Jester Park |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
feeding with other gulls on large reservoir |
| Extent |
1 page |
| 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 Andrew S. Fix. | Elimination of similar species: The large size and dark wingtips eliminates all gulls except Western and Yellow-footed. The massive, dark bill, tail pattern, and pale body color eliminates these. | The original documentation form event lasted from 10:15:00/10:20:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: Viewing conditions were good with the sun mostly behind us. Estimated viewing distance was 250 yards at the closest. I used a Buschnell 20-45x spotting scope. |
| Supporting Documentation |
National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. |
| Date Digital |
11 Jan 2018 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
