Importance of Sitka Spruce Picea sitchensis seed and garden bird-feeders for Siskins Carduelis spinus and Coal Tits Periparus ater: Capsule Siskins and Coal Tits were present in gardens more often in years of poor Sitka Spruce cone crops, with synchrony across the UK.

Author: Mckenzie Ailsa J.   Petty Steve J.   Toms Mike P.   Furness Robert W.  

Publisher: Taylor & Francis Ltd

ISSN: 0006-3657

Source: Bird Study, Vol.54, Iss.2, 2007-07, pp. : 236-247

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