It depends on how frozen for me. once the shell is cracked, I don't feel too great about eating them if there is a single speck of dirt or poo on the cracked shell. Just the thought that the frozen inside broke the shell and was possibly touching the bedding, does me in. It could be the female hormones but me and the children won't touch them. Now if the outer shell is only barely cracked and that thin white layer is not broken, my DH will eat them, not me or the children though. Dh likes fried eggs though so to him it is a waste to give it back to the birds.