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Importance of Sitka Spruce Picea sitchensis seed and garden bird-feeders for Siskins Carduelis spinus and Coal Tits Periparus ater

Ailsa J. McKenzie, Auteur ; Steve J. Petty, Auteur ; Mike P. Toms, Auteur ; Robert W. Furness, Auteur

Dans Bird Study (54 MAR 2007)

Capsule Siskins and Coal Tits were present in gardens more often in years of poor Sitka Spruce cone crops, with synchrony across the UK. Aims To examine how the relative abundances of Siskins and Coal Tits in a garden in western Scotland varied [...]

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Article

Natal conditions alter age-specific reproduction but not survival or senescence in a long-lived bird of prey

Alexandre Millon, Auteur ; Steve J. Petty, Auteur ; Brian Little, Auteur ; Xavier Lambin, Auteur

Dans Journal of Animal Ecology (80(5) SEP 2011)

1. Natal conditions and senescence are two major factors shaping life-history traits of wild animals. However, such factors have rarely been investigated together, and it remains largely unknown whether they interact to affect age-specific perfo[...]

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