The best answer I know for this is maybe. A few years ago the neighbor asked if I'd take a couple young chickens as she had no room for them and I had an extra pen. She'd been keeping them with the young ducklings. They were about 2/3 plucked when I got them. Looked awful and I had to put a lamp out with them at night to keep them warm due to so much bare skin. Two weeks later the heat source was gone and they were feathering out nicely although they never seemed to get as large as they should have.Could I possibly add any ducks? Will they be ok with my chickens?
The best answer I know for this is maybe.