The usual clutch size for Eastern Bluebirds is 3-5 eggs, occasionally you might see 6 eggs. And although the eggs are usually blue, sometimes a female will lay white eggs, like the ones shown below in the photo by Bet Zimmerman.
For information & tips on monitoring a nest box, and other birds who use bluebird houses, visit these links.
Contact us any time with questions at bellavistabluebird@gmail.com, or call/text Laura at 847-951-1743.