breeding genetics

When we bought our first birds, I recall the breeder telling us about problems breeding two almonds. Something about a recessive genetic defect that shows up frequently (always?) in the young of two almonds. At the time, I was focusing more on choosing birds, so most of it slipped by me. Does...

i got 2 birmingham rollers from this guy thats a breeding pair, i have had them in a pen for almost 2 weeks now, they havent started making a nest, but the first day i get them they were mating, and havent seen any more mating behaviour since, is the female pregenant ???? if she is, when will...

i have a 10 year old female roller that wont lay for me. Does anybody know any ways that i can get her to lay for me? she was laying the beginning of last year for me. is she to old?