| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w9br8mj33 |
| Type |
Text |
| Description |
Rare bird documentation form for a Surf Scoter at Jester Park in Saylorville Reservoir in Polk County, IA on November 10, 1990. |
| Related Genres |
Field notes |
| Sort Date |
1990-11-10 |
| People / Organizations |
|
| Time |
9:50 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 |
33 |
| Folder |
11 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Johnson, Ann |
| Contributors |
Allen, Pam Allen, Reid I. Armstrong, Eloise Armstrong, Eugene Engebretsen, Bery |
| Topics |
Birds--Identification Ornithology--Societies, etc Rare birds |
| Birds |
Surf Scoter |
| Locations |
Jester Park |
| Map |
|
| Verbatim Locality |
Jester Park, Saylorville Reservoir, Polk Co., IA |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
Open water |
| Extent |
1 page |
| 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. Other observers include Bery Engrebretsen, Eugene Armstrong, Eloise Armstrong, Pam Allen, Reid Allen, and others from the Des Moines Audubon. | Elimination of similar species: Most ducks were eliminated by the angle/slope of the head and bill and the size of the bill. Although there was a similarity of head profile to the Common Eider, the facial spots eliminated any eider. Black Scoter would have a more rounded head with a uniform lighter cheek area as opposed to the spots on this bird. White-winged Scoter should have shown more rounded angle form the top of the head to the bill, generally would have less distinct facial spots, and definitely would have had white wing patches when the bird raised its wings. | The original documentation form event lasted from 09:50:00/10:05:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: Observed at perhaps 200-300 yards through scope 25x-45x. Skies were mostly overcast with light varying from time to time. |
| Supporting Documentation |
National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Madge S & Burn H. Waterfowl: An identification guide to the ducks, geese, and swans of the world. New York: Houghton Mifflin Harcourt. |
| Date Digital |
28 Nov 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
