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Naturalist Doug Pifer discusses bird feathers.
A Crash Course In Bird Feathers - The Observer
The physics of structural plumage colours in birds
How to decode the secret language of birds
The physics of structural plumage colours in birds
Puffins: Harbingers of Climate Change - The American Prospect
How to Identify a Bird From a Single Feather Smithsonian Magazine
Endemic Birds – Page 2 – BirdsCaribbean
Magpies: how I learnt to grudgingly admire – and then love – the
Rescuing Wildlife Is Futile, and Necessary - The New York Times