La Tour du Valat

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Fluctuations in population size and migration of two species of crossbills in relation to seed crop size of spruce and pine: asymmetric importance of alternative food resources

Svein Dale, Auteur ; Øyvind Meland Edvardsen, Auteur

Dans Journal of Ornithology (165(4) October, 2024)

Bird species depending on seeds from masting trees face large temporal and spatial variation in food availability and perform nomadic or irruptive movements to locate food. In northern Europe, the Common Crossbill (Loxia curvirostra) is speciali[...]

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