Date: 10/04/2010

Number: 1

Had two hummingbirds in the yard today. Female or immature male, not sure which. Heard a new vocalization when the dominant bird chased away the submissive bird. The submissive bird let out a squeak rather than the normal tiny grunts they usually make.

Schiller Park, IL

Latitude: 42 Longitude: -87.9

Observed by: Stephen
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