
The Breeding Bird Survey (BBS) is a co-operative effort among skilled amateur and professional ornithologists to document long-term changes in bird populations. This document presents the Canadian population trends from 1967 to 1998 for the 253 species of birds recorded on the BBS for which sample sizes are sufficient for analysis.
Page Count:
40
Publication Date:
2000-01-01
ISBN-10:
0662288939
ISBN-13:
9780662288930
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