Identifying Rooks BTO - British Trust for Ornithology
Por um escritor misterioso
Descrição
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.
Rook, raven, jackdaw or crow? Hampshire and Isle of Wight
Rook BTO - British Trust for Ornithology
PDF) Importance of Sitka Spruce Picea sitchensis seed and garden
Rook The Wildlife Trusts
BTO Publications – Tagged Field Guides – BTO Services Ltd.
Rare and declining bird species benefit most from designating
RSPB Pocket Guide to British Birds: Taylor, Marianne, Message
Guide to Britain's rarest birds: how to identify and where to see
Microorganisms, Free Full-Text
Standardised empirical dispersal kernels emphasise the
Bird identification UK - BTO Bird ID guides - British Trust for
Rook, crow or raven? How to tell them apart - Woodland Trust
Waders are long-lived birds!
de
por adulto (o preço varia de acordo com o tamanho do grupo)
