Monday, October 21, 2019

Song Sparrow

A Song Sparrow from last summer, 5 July 2019, near Olympia. Judging by the beak-full of insect larvae, the sparrow must have a nest of hungry young. Song Sparrows appear to be monogamous, yet 15% of young in nests are step-siblings. Thus males and perhaps females occasionally “step-out” on mates (Arcese et al. 2002). In any event, like many birds that consume seeds in the winter, these sparrows feed on invertebrates in the breeding season, which they also feed to their young.

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