Audubon field notes
Contributors: U.S. Fish and Wildlife Service
Publisher: National Audubon Society
Published: 1947
Place of publication: New York]
Language: eng
Number of pages: 24
Subjects: Birds; Periodicals; Behavior
Other titles: Christmas bird count.
Notes: One issue of each year contains the 47th-70th Christmas bird count.

Also issued online.

Volumes for Nov. 1947-1970 issued in collaboration with the U.S. Fish & Wildlife Service.