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Circus cyaneus. Hen Harrier
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Hen Harrier male - Circus cyaneus
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The human side of birds,.New York,Frederick A. Stokes company[c1917].
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Coloured figures of the birds of the British Islands. v.1London :R. H. Porter,1885-1897.
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Hen Harrier .Circus cyaneus
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Circus cinereus
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The Vari, or Cinereous Harrier in Chubut Province of Patagonian Argentina.
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Coloured figures of the birds of the British Islands. v.1London :R. H. Porter,1885-1897.
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The birds of Australia..London,Printed by R. and J. E. Taylor; pub. by the author,[1840]-48..
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Ornithological miscellany V.2London :Trbner and Co., Bernard Quaritch, R.H. Porter,1876-1878.
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Coloured figures of the birds of the British Islands. v.1London :R. H. Porter,1885-1897.
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Western Marsh Harrier. Circus aeruginosus
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Lake Sevan, Armenia
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Coloured figures of the birds of the British Islands. v.1London :R. H. Porter,1885-1897.
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Western Marsh Harrier. Circus aeruginosus
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Lake Sevan, Armenia