I have 8 females, 3 males, Pekin and Rouen. They range in age from 6 months to almost 3 years. I noticed a few months ago they just stopped laying altogether. Last year, they laid all year even in winter. Nothing has changed in feed or housing. They free range during the day and go into a fenced-in pond area at night. I let them out usually after 10 a.m. I have read that mating has nothing to do with egg laying BUT I have also noticed the males have no interest in the females at all. Normally the males have to have at it with each female everyday and now nothing. Low T for ducks?? They are not that old so I can't see age being a factor. Any suggestions as to what else it could be?