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Re: [CALBIRDS] White-crown questions

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  • Ken Burton
    It would be so close to zero as to be negligible. Ken Burton McKinleyville ... From: Debbie Viess To: CALBIRDS@yahoogroups.com Sent: Monday, April 25, 2005
    Message 1 of 5 , Apr 25, 2005
      It would be so close to zero as to be negligible.

      Ken Burton
      McKinleyville
      ----- Original Message -----
      From: Debbie Viess
      To: CALBIRDS@yahoogroups.com
      Sent: Monday, April 25, 2005 3:27 PM
      Subject: RE: [CALBIRDS] White-crown questions


      Has anyone looked at what percentage of that estimated mortality is
      caused by the bands themselves?

      Debbie Viess
      Oakland, CA




      Joe Morlan wrote:

      Calbirders,

      In a study published by Mewaldt:

      Mewaldt, L. R. 1976. Winter philopatry in white-crowned sparrows
      (Zonotrichia leucophrys). North Am. Bird Bander 1:14-20.

      170 out of 503 banded White-crowned Sparrows returned to a winter
      banding
      site within the next three years. Mewaldt concluded that these birds
      were
      imprinted on their winter site and that average annual mortality of
      winter-home-imprinted birds was about 40%.


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