My experience with ducks leads me to think that they will form "family groups" like chickens. Birds that are raised together tend to hang out together, and there may be a certain amount of aggression between rival groups - particularly if one of those groups is a bunch of "batchelors."
Duck eggs take another week (28 rather tan 21 days); I've generally had significantly lower hatch rates when I've tried to do it. Duck hens don't seem to have that issue; the times I've had a duck incubate eggs, she hatched almost all of them, even the one that was sitting on 18 eggs.
Just a side note - I had a drake that was raised with chicks that thought he was a chicken, too. I named him Ferdinand, after the duck in the movie Babe ("I tried it with the hens; it didn't work.") I had to lock my Ferdie up with a duck hen for a while for him to get over his species confusion.
Duck eggs take another week (28 rather tan 21 days); I've generally had significantly lower hatch rates when I've tried to do it. Duck hens don't seem to have that issue; the times I've had a duck incubate eggs, she hatched almost all of them, even the one that was sitting on 18 eggs.
Just a side note - I had a drake that was raised with chicks that thought he was a chicken, too. I named him Ferdinand, after the duck in the movie Babe ("I tried it with the hens; it didn't work.") I had to lock my Ferdie up with a duck hen for a while for him to get over his species confusion.
