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Cerulean Warbler

 

Dendroica cerulea

The Cerulean Warbler is a small (about 4 inches, .3 ounces), pale sky-blue bird who's color makes it hard to distinguish against the blue sky. The adult males have a vivid blue coloring with white under parts, while the females coloring is more dull. The male has a thin black band across it's breast where the female does not. Both have wing bars and thin, pointed bills.

cerulean warbler picture
Diet

The Cerulean Warbler is an insect-eating bird. Actively foraging in high trees, they catch insects in flight.

Population

This birds population is less then 1/5 of what it was 40 years ago. Current estimate is approximately 560,000 birds.

Range

The Cerulean Warbler is a migratory bird. They breed in Eastern North America and spend winters in forested mountain areas of South America.

Breeding

The Male Cerulean Warblers arrive at the breeding grounds about a week before the females. They will scout areas on the northern coast of the Gulf of Mexico (late March to early May) to establish territories. Once the females follow and pairs are made, they will choose the nest sites while the male sings his distinctive vocalization. The nests are usually made of hair, grass, and bark strips. The Warblers use spider webbing or caterpillar silk to loosely attach the nest to the limbs of the tree.

Mating Season From April to May
Clutch size up to 4 eggs
Both parents will feed the young for up to two weeks after hatching.  Both will also continue to care for the fledglings after they have left the nest.

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