Most country drives during an eastern North American summer will turn up a few Eastern Bluebirds sitting on telephone wires or perched atop a nest box, calling out in a short, wavering voice or abruptly dropping to the ground after an insect. Marvelous birds to capture in your binoculars, male Eastern Bluebirds are a brilliant royal blue on the back and head, and warm red-brown on the breast. Blue tinges in the wings and tail give the grayer females an elegant look.
Size & Shape
The Eastern Bluebird is a small thrush with a big, rounded head, large eye, plump body, and alert posture. The wings are long, but the tail and legs are fairly short. The bill is short and straight.
Male Eastern Bluebirds are vivid, deep blue above and rusty or brick-red on the throat and breast. Blue in birds always depends on the light, and males often look plain gray-brown from a distance. Females are grayish above with bluish wings and tail, and a subdued orange-brown breast.
Eastern Bluebirds perch erect on wires, posts, and low branches in open country, scanning the ground for prey. They feed by dropping to the ground onto insects or, in fall and winter, by perching on fruiting trees to gulp down berries. Bluebirds commonly use nest boxes as well as old woodpecker holes.
Eastern Bluebirds live in meadows and openings surrounded by trees that offer suitable nest holes. With the proliferation of nest boxes and bluebird trails, bluebirds are now a common sight along roads, field edges, golf courses, and other open areas