| UID |
|
| Digital Object Type |
Rare birds documentation form |
| Content DM Link |
https://n2t.net/ark:/87292/w93x83n29 |
| Type |
Text |
| Description |
Rare bird documentation form two Trumpeter Swans at Runnells Area in Marion County, IA on February 29, 1992. |
| Related Genres |
Field notes |
| Sort Date |
1992-02-29 - 1992-03-01 |
| People / Organizations |
|
| Time |
2:30 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 |
30 |
| Contributing Institution |
Iowa State University Library Special Collections and University Archives |
| Creator / Author |
Kent, Thomas H. (Thomas Hugh), 1934- |
| Contributors |
Cecil, Robert I. Johnson, Ann |
| Topics |
Birds--Identification Ornithology Rare birds |
| Birds |
Trumpeter Swan |
| Locations |
Red Rock Wildlife Area |
| Map |
|
| Verbatim Locality |
Runnells A.; Marion Co., IA |
| Location Remarks |
The documentation forms do not include georeferences |
| Habitat |
Refuge area at upper end of Red Rock Res. |
| Extent |
1 page |
| Language(s) |
eng |
| Bibliographic Citation |
|
| Information Withheld |
|
| Individual Count |
2 |
| Occurrence Remarks |
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Bob Cecil, Ann Johnson, and another man. | Elimination of similar species: The appearance of the adult's bill eliminates Mute Swan. The lack of a yellow bill spot on the adult argues against Tundra Swan, but I understand that this is not an absolute criteria. The straightness of the culmen and shape of the feather extension along the forehead are difficult to judge, especially at a distance. Perhaps most convincing was the amount of darkness on the immature. Tundra Swans are said to be quite white on the back and wings by spring. The size of the bill on the immature was also quite impressive. The date is a bit early for Tundra Swan, but fine for Trumpeter. | The original documentation form event lasted from 14:30:00/14:45:00. |
| Occurrence Status |
present |
| Field Number |
|
| Event Remarks |
Viewing Conditions: Light: Sun behind us; Distance: 500 + yards (guess); Optics: 10x binoc, 20x scope; old Questar (about 50x). |
| Supporting Documentation |
|
| Date Digital |
20 Nov 2017 |
| File Type |
image/jpeg |
| Hardware / Software |
Epson - sheet feed |
