Eastern Bluebirds are common backyard visitors however they prefer insects and worms will not readily visit a seed feeder. They prefer mealworm feeders.
Males have blue on the head, back and wings. They have rufous color on the throat and side of neck with a white belly.
Females are more of a dull blue-gray on the back and head with light rufous sides and chest with a white throat and belly.
Stout dark bill.
Insects, fruits. Forages on the ground.
Prefers open woodlands near open areas like parks, fields, yard.
Nests in cavities.
Yes, Link for Eastern Bluebird Nest Box
Male Eastern Bluebirds will claim a nest box or cavity and brings in nest material. He will flash his blue wings to attract a female.
European Starling and House Sparrows will compete for Eastern Bluebird nest sites.
Link for more information: Eastern Bluebird