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  1. W

    Chaffinches on Feeders

    No luck so far finding any anatomical correlate, but it is generally noted that Carduelines grasp and hang whereas Fringillines don’t.
  2. W

    Chaffinches on Feeders

    There is a major split in Fringillidae between Chaffinch and Brambling, and all the rest; whether there is something anatomical which leads to a difference in clinging ability I do not know.
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