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Bird population trends detected by the North American breeding bird survey

January 1, 1977

Continental populations of most bird species have remained quite stable since 1966, but there have been many regional changes associated with migration disasters, breeding failures and range expansions, and a few dramatic increases in populations of introduced species. These changes often are better represented by curvilinear than by linear regressions.

Publication Year 1977
Title Bird population trends detected by the North American breeding bird survey
Authors D.R. Bystrak, C.S. Robbins
Publication Type Article
Publication Subtype Journal Article
Series Title Polish Ecological Studies
Index ID 5220989
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center