High Quality Content by WIKIPEDIA articles! The Cerulean Warbler, Dendroica cerulea, is a small songbird of the New World warbler family. Adult males have pale cerulean blue upperparts and white underparts with a black necklace across the breast; they also have black streaks on the back and flanks. Females and immature birds have greyer or greenish upperparts, a pale stripe over the eye, and no streaking on the back and no necklace. All of these birds, regardless of their age, have wing bars and a thin pointed bill.

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