The North American Swans: Their Biology and Conservation

Released on by Paul Johnsgard
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  • The North American Swans: Their Biology and Conservation Book Detail

  • Author : Paul Johnsgard
  • Release Date : 2020-03-23
  • Publisher : Lulu.com
  • Genre : Science
  • Pages : 168
  • ISBN 13 : 1609621719
  • File Size : 73,73 MB
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The North American Swans: Their Biology and Conservation by Paul Johnsgard PDF Summary

Book Description: Among birds, swans are relatively long-lived species and are also among the most strongly monogamous, having prolonged pair and family bonds that strongly influence their reproductive and general social behavior, which, in combination with their beauty and elegance, contribute to the overall high degree of worldwide human interest in them. This volume of more than 59,000 words describes the distributions, ecology, social behavior, and breeding biologies of the four species of swans that breed or have historically bred in North America, including the native trumpeter and tundra swans, the introduced mute swan, and the marginally occurring whooper swan. Also included are 5 distribution maps, 15 drawings, 27 photographs by the author, and a reference section of nearly 1,000 literature citations.

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