Identifying Rooks BTO - British Trust for Ornithology
Por um escritor misterioso
Last updated 11 junho 2024
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Rook_crow_montage_small.jpg Top left: Juvenile Rook by Breffni Martin. Bottom left: Adult Rook by John Harding. Right:Carrion Crow by Jill Pakenham. (Click to enlarge). Adult Rooks are easy to identify thanks to the bare, greyish-white skin around the base of their bill. The rest of their plumage is all black. A juvenile Rook, however, is similar to a Carrion Crow as it doesn't develop the bare bill-base until its second calendar year. If you're not sure, look for the Rook's characteristic flat forehead, peaked crown, ruffled drooping belly feathers and feathered thighs.
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Rook The Wildlife Trusts
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A CACOPHONY OF CORVIDS: the mythology, by Jennings, Pete
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Rook BTO - British Trust for Ornithology
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Black birds that aren't blackbirds
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How to identify bird and mammal nests - Discover Wildlife
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Identification of Juvenile Rooks and Carrion Crows - Corvid Isle
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Understanding birds BTO - British Trust for Ornithology
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RSPB Pocket Guide to British Birds: Taylor, Marianne, Message
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Cambridge corvid cognition lab saved from closure by public
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Rook (Corvus frugilegus) - British Birds - Woodland Trust
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BTO Publications – Tagged Field Guides – BTO Services Ltd.
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