Adults might be taken by snakes, falcons, cats, or other predators. Eggs could be eaten by birds such as jays and crows, snakes, raccoons, or skunks.
Bluebirds have difficulty nesting where other more aggressive birds build nests. Exotics such as the European starling occupy nesting sites that bluebirds prefer. Bluebird habitat is orchard-type habitat, and humans have caused pressure on bluebirds by converting this type of habitat into other uses.
House sparrows and wrens often compete with bluebirds for the same nesting house. Often time sparrows will break bluebird eggs or make another nest over the current bluebird nest.
It is bluebird!
Bluebird is owned by Flowers Foods
The eastern bluebird is Sialia Sialis.
Mr Bluebird a farmer
The Mountain Bluebird.
There is no such thing as a southern bluebird.
A eastern bluebird is covered in feathers.
Bluebird Garage was created in 1923.
Nissan Bluebird was created in 1959.
Bluebird Records was created in 1932.
Bluebird Cargo was created in 2000.