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Habitat selection by wintering male and female Snowy Owls on the Canadian prairies in relation to prey abundance and a competitor, the Great Horned Owl

Alexander M. Chang, Auteur ; Karen L. Wiebe, Auteur

Dans Journal of Field Ornithology (89(1) March, 2018)

Birds overwintering at high latitudes may find it challenging to meet their energy budgets when thermoregulatory costs are high and food availability is low. Snowy Owls (Bubo scandiacus), like most raptors, exhibit reversed sexual size dimorphis[...]

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Article

Seeing sunlit owls in a new light: orienting Snowy Owls may not be displaying

Karen L. Wiebe, Auteur ; Alexander M. Chang, Auteur

Dans Ibis (160(1) 2018)

Snowy Owls Bubo scandiacus often face the sun when sitting on the ground or when perched. Such sun-orienting has been suggested to represent a visual display to conspecifics but other explanations have not been thoroughly examined. We observed t[...]

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