tundra (whistling) swan

• Other Authors: Borror, Donald J
• Format: Audio
• Language: unknown
• Published: Borror Laboratory of Bioacoustics 1956
• Subjects: tundra (whistling) swan; Cygnus columbianus; Tundra
• Online Access: http://hdl.handle.net/2374.OX/37177

FG call(s) contiuous squawking notes, best from 032-036