Population estimates of North American shorebirds, 2006
Info
Pages
67 – 85
Published
1 December 06
Authors
R. I. Guy Morrison, Brian J. McCaffery, Robert E. Gill, Susan K. Skagen, Stephanie L. Jones, Gary W. Page, Cheri L. Gratto-Trevor, Brad A. Andres
Correspondence
R. I. Guy Morrison
Canadian Wildlife Service, National Wildlife Research Centre, Carleton Univ., 1125 Colonel By Drive (Raven Rd), Ottawa, ON, Canada K1A 0H3.
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This paper provides updates on population estimates for 52 species of shorebirds, involving 75 taxa, occurring in North America. New information resulting in a changed estimate is available for 39 of the 75 taxa (52%), involving 24 increases and 15 decreases. The preponderance of increased estimates is likely the result of improved estimates rather than actual increases in numbers. Many shorebird species/taxa are considered to be declining: current information on trends indicates negative trends outnumbered increasing trends by 42 to 2, with unknown or stable trends for 31 taxa.