| Common Name: | Kingbird, Cassin's | | Scientific Name: | Tyrannus vociferans | | Family: | Tyrannidae (Flycatchers) | | Area: | Santee Lakes - Santee, California | | Date: | December 11, 2010 | 
Cassin's Kingbird has a darker head with more contrast in white chin than the Western Kingbird. It is also slightly larger and has a larger bill. | | Reference: | Kaufman Field Guide to Birds of North America by Kaufman |
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