| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w94746s84 |
| Type |
Text |
| Description |
Rare bird documentation form for a Red-necked Grebe at Jester Park at Saylorville Lake in Polk County, IA on October 28, 1990. |
| Related Genres |
Field notes |
| Sort Date |
1990-10-28 |
| People / Organizations |
|
| Time |
12:45 PM |
| 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 |
32 |
| Folder |
13 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Johnson, Ann |
| Contributors |
|
| Topics |
Birds--Identification Ornithology Rare birds |
| Birds |
Red-necked Grebe |
| Locations |
Jester Park |
| Map |
|
| Verbatim Locality |
Jester Park, Saylorville Lake, Polk Co., Iowa |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
Open water |
| Extent |
2 pages |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
1 |
| Occurrence Remarks |
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: Loons were eliminated on the basis of thin neck and posture. Cormorants were eliminated because of straight posture, lack of throat patch, and basic plumage configurations. The bird was obviously larger than a Pied-billed Grebe which would, in addition to the yellow bill, eliminate all but Western Grebe. Western Grebe would have looked much larger than the various waterfowl nearby and would not have shown any rust color on the neck. | The original documentation form event lasted from 12:45:00/13:05:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: The sun was to my right. There was no glare from the water, but heat waves interfered with observations as the bird moved further away. Initial sighting at about 30x showed good detail. I guess the distance at 500 yards, but that is really a shot in the dark as it was hard to judge the distance across the water. Observation was through a B&L scope at 30x-45x. |
| Supporting Documentation |
National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Harrison P. Seabirds: an identification guide. New York: Houghton Mifflin Harcourt. |
| Date Digital |
17 Nov 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
