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  1. Simon M

    White-feathered American Crow

    Just seen an article in a recent Dutch Birding. The basic jist is the the phrase 'partial albino' is utter rubbish, albinism refers to one particular genetic mutation resulting in a non-functioning protien that produces melanim, therefore it can only occur entirely or not at all. All other...
  2. Simon M

    White-feathered American Crow

    ?? Isn't it more common than a complete albino, to see an individual which lacks pigment in just a few groups of feathers. In british corvids pigment loss in flight feathers can be caused a parasite infestation, but I've seen Fieldfare, Reed Bunting, Redwing and Meadow Pipits, which had entirely...
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