This morning I found a regularly sized egg in the middle of the duck pool. After picking it up I realized that it has no shell! It was all squishy and leathery! She is in her third year of lay and this has never happened before! Or it could be possible that my 6 mo buff drake is really a duck? And he/she laid it? He doesn't have a green head and no mating behavior has been seen yet. Should he have a green head? I feed Dumor layer crumble as I also have chickens. I also give grit and uncooked corn on the cob. -thanks!!!