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1 September 2009 Adoption in Rock and White-tailed Ptarmigan
Mark M. L. Wong, Brad C. Fedy, Scott Wilson, Kathy M. Martin
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Abstract

Reports of adoption in birds are widespread, but few studies report rates of adoption or possible mechanisms for this phenomenon, particularly in the Order Galliformes. We report incidents of adoption in Rock Ptarmigan (Lagopus muta) and White-tailed Ptarmigan (L. leucura) from two sites in western Canada. Adoption rates for White-tailed Ptarmigan on Vancouver Island, British Columbia, and the Ruby Ranges, Yukon Territory were 13% (n  =  16 broods) and 4% (n  =  27), respectively, while rates for Rock Ptarmigan were 14% (n  =  29) in the Ruby Ranges. Low brood densities may result in lower rates of adoption for ptarmigan.

Mark M. L. Wong, Brad C. Fedy, Scott Wilson, and Kathy M. Martin "Adoption in Rock and White-tailed Ptarmigan," The Wilson Journal of Ornithology 121(3), 638-641, (1 September 2009). https://doi.org/10.1676/08-029.1
Received: 15 February 2008; Accepted: 1 February 2009; Published: 1 September 2009
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