The birdies have hatched!!! I've found out that these are little baby Robins. So far it looks like there are three of them and one of the eggs hasn't hatched yet... it might be a dud but hopefully it hatches soon. The mamma bird is getting really protective now. Whenever we get too close she flies away but lands on a branch of a tree across the yard and watches us till we get far enough away that she'll come back.