I found these 2 robin eggs in a a cedar in our yard not far from the house.
Have you every wondered why robin eggs are blue? The blue colour in robin eggs is due to biliverdin, a pigment deposited on the eggshell when the female lays the eggs.
Other birds that have blue eggs are:
blue jays, red winged black birds, snowy egrets, song thrushes, and house finches just to list a few! (according to google)