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3417Re: [OrangeCountyBirding] Re: Weird Rarity Chase

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  • Joel Weintraub
    Jan 2, 2009
      One would think in this discussion that reference be made to the bible of
      bird banders in defining species... e.g. Peter Pyle's Part 1 volume on
      Identification Guide to North American Birds. The Rufous Hummingbird
      account is on page 148, and the Allen's on page 150. I don't see anything
      there about any length difference in the central rectrices between the
      species, but there is a difference in the outer rectrices being broader in
      Rufous than Allen's.

      Joel Weintraub
      Dana Point, CA
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