I have 11 chickens. 7 Buff Orpingtons and 4 Rhode Island Reds. They have been laying for about 3 months. I have 2 questions. 1 of the Rhode Island Red has never developed any tail feathers. She is also extremely wild. Is this a throw back to a wild chicken or a birth defect? 1 of the Reds layed an egg this morning the size of my thumb. She has been laying normal eggs before what causes this? thanks for the help.