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Article

Winter feeding influences the cost of living in boreal passerines

Juli Broggi, Auteur ; Esa Hohtola, Auteur ; Kari Koivula, Auteur

Dans Ibis (163(1) 2021)

The plastic regulation of internal energy reserves is acknowledged as the main adaptive response to winter conditions of resident small birds in northern latitudes, a strategy that may be altered whenever human-supplemented food is available. We[...]

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Article

Environmental drivers of roosting body mass variation in boreal Great Tits Parus major

Juli Broggi, Auteur ; Kari Koivula, Auteur ; Esa Hohtola, Auteur ; Markku Orell, Auteur

Dans Ibis (159(4) 2017)

Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental co[...]

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