iv hatched 3 ducks from incubation. they are my first three ever. theyre now 5 months old and i was wondering if and when they are going to lay eggs they have a fenced off area in my backyard and a little hutch like structure the sleep in and go in when its hot. now i usually let them out of their area to roam around the yard. my MAIN question is if i do not give them a nesting box-will they make a nest of their own?