Oak Catkins and Blackburnian Warblers: opportunistic flower consumption by an insectivorous bird: Amentos de roble y reinitas gorjinaranja: consumo oportunista de flores por un ave insectívora

Carlos Julián  Idrobo; Eduardo  Gallo-Cajiao

Autores/as

Carlos Julián Idrobo Grupo de Investigaciones ANTROPOS, Universidad del Cauca / Fundación ECOHABITATS
Eduardo Gallo-Cajiao Programa de Biología, Universidad del Valle, Ciudad Universitaria de Meléndez, Cali, Colombia./ Fundación ECOHABITATS

Palabras clave:

Blackburnian Warbler, migrant birds, flower consumption, opportunistic behaviour, Colombian Andes

Resumen

The diet of the Blackburnian Warbler (Dendroica fusca) has been reported to include mainly insects and occasionally fruits. We observed this species eating Andean Oak (Quercus humboldtii) catkins in the Colombian Andes. Apparently an opportunistic exploitation of a temporarily superabundant resource, this phenomenon has been reported for other wintering boreal migrants. We briefly review the effects of flower consumption for the plant and possible benefits for the bird.

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