Trumpeter Swan Survey of the Rocky Muntain Population, Fall 2002 (Paperback) (ISBN-13: 9781490311937)

The Fall Trumpeter Swan Survey is conducted annually in September. The survey is conducted cooperatively by several administrative entities and is intended to provide an accurate count of the number of RMP trumpeter swans that summer in the U.S. The history of the survey dates back to the 1930s, although methods and survey coverage have changed over time as the number of swans increased and new technologies became available. Survey methodology and coverage have remained fairly consistent since 1966 (D. Olson, pers. comm.). To be consistent with previous reports, only the data from 1967 to present were analyzed for this report. The data are used by managers to assess the annual status of the Tri-state Area Flocks and restoration flocks.

Author: U S Fish & Wildlife Service
ISBN-10: 1490311939
ISBN-13: 9781490311937
Publisher: Createspace Independent Publishing Platform
Language: English
Published: 02/24/2003
Pages: 30
Format: Paperback
Weight: 0.21lbs
Size: 11.02h x 8.50w x 0.06d