Tundra swan Cygnus columbianus.

Bibliographic Details
Corporate Author: U.S. Fish and Wildlife Service
Format: Government Document Book
Language:English
Published: [Washington, D.C.] : [U.S. Fish and Wildlife Service], [2009?]
Subjects:
Online Access:https://purl.fdlp.gov/GPO/LPS108841
Description
Item Description:Title from title screen (viewed on Feb. 19, 2009).
Electronic resource.
Physical Description:1 unnumbered page : digital, PDF file.
Format:Mode of access: Internet from the FWS web site. Address as of 2/19/09: http://www.fws.gov/sacramentovalleyrefuges/pdf/tundra%20swan%20-%20with%20alt.pdf ; current access via PURL.