I have a pair in my garden that have built a nest in a bluebird box and I have watched them caring for their two hatchlings for several weeks. The two babies have apparently left the nest as I noticed there was no more feeding activity from the parents. Today I opened the box and found 2 unhatched eggs there.
Is it common for some eggs to remain unhatched?
Will the parents return to the box and raise another clutch this summer?
Is it common for some eggs to remain unhatched?
Will the parents return to the box and raise another clutch this summer?