I have Muscovy and Pekin ducks with geese and Chickens - Barred Rocks and NHR's. all free range together and eat together, but sleep in sperate coops. I have not had any problems, When I give scratch grain - there is a peking order - the geese eat first then the ducks and the chickens run in and out taking what they can.
The chickens have their own water and layer pellets in thier coop (free choice) - Ducks and geese are given all flock once the chickens are locked up.
The chickens have their own water and layer pellets in thier coop (free choice) - Ducks and geese are given all flock once the chickens are locked up.