We are at about day 14 or 15 (Muscovy). I have tried candling the eggs and all but one are very dark with a light circle at one end (air pocket?). Is this what I am supposed to see? I am assuming from what I have read that maybe the one was not fertile? I have one white Muscovy hen, two black/white scovy hens, and a pair of pekins in addition to my large white scovy drake. What are the odds all of my eggs are pure scovy? that pekin drake tries to breed them also.