Behavior and Ecology
The Bell's Vireo makes a well-camouflaged nest but when found the bird will stand its ground against intruders. Cowbirds use Bell's Vireo nests as their own nurseries. Bell's Vireo often uses Western poison oak shrubs or vines as nesting locations. Cowbirds sometimes lay eggs in Bell's Vireo nests.
Read more about this topic: Bell's Vireo
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