Sunday, June 15, 2014

Eastern Kingbird

On 15 May 2014, Gerry Hoekstra and I discovered a large flock of Eastern Kingbirds in a field in Carver County, Minnesota. I tend to think of kingbirds as solitary creatures, seldom seen beyond pairs. But when Erika and I studied in Ecuador in the winter, we often saw large flocks. Judging by the numbers I saw this year—Gerry and I conservatively counted 16 in one field—I suspect kingbirds make their northward migration in flocks.

Eastern Kingbirds are normally the only kingbird in eastern North America. Their range, however, extends across the continent to the Pacific Coast. In the northland, they catch flying insects, the lack of which can limit their reproduction in cool, wet weather (Murphy 1996). In South America, however, they also eat fruit.

No comments:

Post a Comment