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  1. Ian Lewis

    Oceanic Birds of the World

    Although IOC includes an east Indian Ocean race westralis there is no mention in the Ocean Birds book.
  2. Ian Lewis

    Oceanic Birds of the World

    I've seen the tropicbirds on Christmas Island and they seem to vary from almost pure white, to a hint of yellow to a deep golden colour. Mixed pairs seem common. I'm sure they are just a colour morph.
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