I am new to raising ducks and chickens. I have one female pekin and two male rouen that have been mating for about a month now. They will all be 18 weeks on the 6th of September. My pekin laid her first egg Wednesday morning. She didn't lay today. They don't roam around the yard. They have a big pen they stay in. I haven't been able to make any laying spots for them yet. My questions are..... Will her first egg be fertile? Why didn't she lay today? Do they normally start laying everyday once they lay their first egg? Please help! Thanks in advance!!!