We have 4 Indian runners and 4 silkie chickens. All same age but did not share the coop to start so ducks claim it as theirs. I regret getting ducks, but my husband wanted them for their tasty eggs...which they are not producing! They are messy, get the whole coop wet and are honory ...already had an accident with one of the chickens falling into the pond set up because they chase them. Husband n I are bumping heads and either I find a solution or I am thinking of giving up my babies so they will be happy and safe.