Cerulean Warbler

Cerulean Warbler
Cerulean Warbler. Photo by Ruth Cornwell.

Appearance: Cerulean warblers are small 4.3″ long birds with sky-blue above, white wing bars, darker blue streaks on the back, white belly, steel/blue neck band & stripes on the sides. The females are light blue/green above, with soft yellow bellies, brown wings, and a bit of white under the eye.

Diet: Insects and plants.

Feeder food: Unlikely to visit the feeder.

Habitat: Deciduous forests with mature tall trees.

Nesting: Cup-shaped nests of twigs, grass, and spiderwebs placed in trees 16-115′ up. 1 brood/season, 1-5 eggs/brood, eggs are .6-.8″ long, gray/green, and speckled with brown, incubation lasts 11-12 days.

Migration: Cerulean warblers are migrators. They head north into the midwest and northeast states for spring & summer then head south to South America for the winter.
Breeding range: Eastern Minnesota, the southern half of Wisconsin & Michigan, Missouri, Illinois, Indiana, Ohio, Pennsylvania, New York, Kentucky, Tennessee, southern New York, and the far southern edge of Canada’s Ontario.
Winter range: South America.

Range Map

Cerulean warbler range map.
Cerulean warbler range map. Compliments of The Cornell Lab.