| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w91c1tj0w |
| Type |
Text |
| Description |
Rare bird documentation form for two Greater Scaups at Saylorville Lake in Polk County, IA on November 20, 1988. |
| Related Genres |
Field notes |
| Sort Date |
1988-11-20 - 1988-11-27 |
| People / Organizations |
|
| Time |
3:45 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 |
33 |
| Folder |
10 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Thomas, Michael K. |
| Contributors |
Johnson, Ann |
| Topics |
Birds--Identification Ornithology Rare birds |
| Birds |
Greater Scaup |
| Locations |
Saylorville Lake |
| Map |
|
| Verbatim Locality |
Highway 17 and Des Moines River - North end of Saylorville Lake - Polk Co., IA |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
river flowing into Saylorville lake, fairly shallow, and plants on both sides |
| Extent |
1 page |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
2 |
| Occurrence Remarks |
The documentation form by Mike Thomas is the only one submitted and forms the basis of this record. Other observers include Ann Johnson. | Elimination of similar species: Lesser scaup (size, head shape, head color on male, whiter sides on male in direct comparison to lesser scaups. Side by side comparison with lesser scaup was thankfully easy. The male's rounded head contrasted clearly with the more pointed heads of the lesser scaup. Also, the dark green head of male was visible. The male birds sides were whiter than male lesser scaup's sides and the difference in size was noticeable. | The original documentation form event lasted from 15:45:00/16:15:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: Mostly clear with 20% cloud cover, late afternoon light, 150-200 yards estimated 8x40 binoculars and 60 mm scope @ 25-30x. The sun was to our left and behind us as we looked north at the birds. |
| Supporting Documentation |
National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. |
| Date Digital |
27 Nov 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
