Rook (Corvus frugilegus) [XC862996]
by Stuart Fisher from Jardin Lecoq, Clermont-Ferrand, Puy-de-D\u00f4me, Auvergne-Rh\u00f4ne-Alpes, France (call)
Rook (Corvus frugilegus) [XC546946]
by Mr Mark Shorten from Bellecombe - Gaite (near Lyon), Rh\u00f4ne, Auvergne-Rh\u00f4ne-Alpes, France (begging call, flight call, song)
Nest
A base of twigs and mud, with a soft lining, in the topmost branches of a tree. In colonies.
Eggs (Guide)
2 - 6; light blue or green, with speckles and blotches of shades of olive. Incubation: 14 - 22 days; by female only.
Young
Altricial, nidicolous. Fledge in 30 - 36 days.
Subspecies
Subspecies frugilegus introduced to eastern North Island and South Island, New Zealand.
The following 2 subspecies are recognised:
frugilegus Linnaeus, 1758 - Western Eurasia from the British Isles and Iberian Peninsula, east to central Siberia, north-western Mongolia, Tien Shan and Iran. Winters south to northern Africa, Saudi Arabia and north-western India.
pastinator Gould, 1845 - Central-eastern Asia from central-eastern Siberia and central Mongolia to central China and Korean Peninsula. Winters in Japan, south to south-eastern China.
The Reader's Digest Book of British Birds 1980, 3rd Edition, Drive Publications Ltd ISBN 0 340 25308 8
Birds in Colour Campbell, B., 1960, Penguin Books Ltd
The Pocket Guide to Nest and Eggs Fitter, R.S.R., 1954, Collins
RSPB Handbook of British Birds Holden, P., Cleeves, T., 2002, A & C Black ISBN 0 7136 5713 8
Birds of Britain and Europe Sterry, P., et al., 2001, AA Publishing ISBN 0 7495 3068 5
The Popular Handbook of British Birds Hollom, P.A.D., 1973, H.F. & G. Witherby Ltd ISBN 0 85493 002 7
BirdLife International Species Factsheet