Two of my three hens started laying last Friday (exactly one week ago). I found the first two eggs on Friday morning. One was very tiny, a little larger than a sparrow egg (and these ARE standard sized chickens) and was dark brown, and the other egg could hardly be called an egg--the yolk as there, the white was there, but there was no membrane or shell. She kind of just layed mush...Anyway, I was unsure which hen layed which egg, and also why they were so deformed. They didn't lay again until Tuesday. It was another perfect dark brown egg--the only problem was the size. Of course, it was MUCH bigger than last time, but still maybe 2/3 the size of a store-bought grade AA white egg. On Wednesday, another shell-less egg came. On Thursday, it was another brown one, SLIGHTLY bigger than last time. AND another egg, which we found on the ground underneath the chicken coop (no doubt while wwe let them out in the afternoon). THIS egg is the strangest egg I have ever seen. There was a yolk, a white, there was even a membrane. There was, however, no shell! It was a perfectly shaped egg, but it was mushy because in place of a shell there was only a membrane. And today--In the morning, I found another egg--but just a yolk! And this afternoon, the chickens were out and I caught one of them in the act. Coco (the hen's name), was just walking, and out popped the egg! She just laid it while walking! This time, there was no shell, just a yolk, a white, and a membrane rolled up off on the side! But at least I know the culprit. My question is--why are Coco's eggs so messed up? If it helps, my hens just turned 4 months old yesterday. Coco is a Cuckoo Marans. She is very big for her age, nearly seven pounds! The other two (not sure which one is laying) are: Dot=an EE Camilla=silver laced cochin/blue cochin mix All three are standard sized. There is a rooster with them--does this make a difference (Peeps is a white leghorn roo, nearly 5 months old) They have all been eating layer pellets for about three weeks now. Could it be a lack of calcium? Thank you!