The Blue-headed Vireo is a relatively small bird with a length of 126-148 mm (4.9-5.8 in). The wingspan is 200-240 mm(7.9-9.4 in) and their weight is 13-19 g. It is characterised by its olive green upper body, two bold yellow wing bars and a deeep blue -grey crown. Both sexes are similar in appearance.
Habitat and Distribution
Native to North America, their breeding range extends across Canada and the eastern coast of the United States, Mexico and some of Central America. Blue- headed Vireo breed in cool temperate forests, at high elevations. Evergreeen forests are the habitat of choice.
They forage on insects, hoppin from branch to branch. Typical prey consists of caterpillars, moths, butterflies, tree bugs beetles, etc. They fed on fleshy berries and fruit during migration.
Breeding season starts in mid April. The male and female build a nest between branches of evergreen and deciduous trees. A female will lay 3-5 eggs at a rate of 1 egg per day. Eggs are creamy white with brown or black spots and are incubated for 14 days after being laid.
Calls and Songs
The song is a slow, monotonous tune sung by males during breeding season. Mated pairs communicate by using high pitched chirping calls.