Hi - My 20 week old pullets (I've 5 of them) have just started to lay. I've had 4 small, but perfect, eggs over 3 days. This morning I discovered a shell-less egg in the coop bedding beneath the perches. There was no shell & I don't think the birds had noticed it before I removed it. The other eggs had all been layed in the nest boxes. Is this common in the begining? - thanks, in advance, for your help