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1by Muir, John“... of their field of research in natural history, innumerable flocks of birds, chance to study reindeer...”
Published 1881
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Text -
2by Muir, John“... of their field of research in natural history, innumerable flocks of birds, chance to study reindeer...”
Published 1881
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Text -
3by Darling, Frank Fraser“... of winter groups and migratory flocks in autumn and the unifying element in them. And why do breeding flocks...”
Published 1938
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Doctoral or Postdoctoral Thesis -
4“... and individual scales. At the flock level, birds avoided lichenāheath, used other terrestrial habitats...”
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Article in Journal/Newspaper