Cats, raccoon, foxes and sparrows killing babies.
A hawk
a cat
They are medium sized.
Scavengers will eat these birds.
Scavengers would eat these birds.
Only the females lay eggs.
If the Bluebird is too old or too ill to take on care of the baby birds it will leave the nest and let another bird care for them. 98% of eggs are found and raised to adulthood. The 2% of eggs that aren't found doesn't affect the Bluebird's population
Bluebird trails are lines of bluebird houses. There could be four house in a row or there could be hundreds. It gives many bluebirds a safe place to nest and lay eggs.
Robin is a bird that has blue eggs. The eastern bluebird, as well.
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.
Eastern bluebird.
they eats eggs!