First time duck & chick mom. We have 9 chicks (3 RIR, 2 Araucanas, 2 Black Jersey Giants, 1 Black Australorp & 1 Isa Brown) and 8 ducks (3 Peking, 3 Rouens & 2 Khaki Campbell) just shy of 4 weeks ago. They are all kept in a 5x5 foot brooder. I noticed last night the smaller KC is pulling (not nicely grooming, like yanking) out feathers on the other ducks and nipping occasionally at the chicks. Is it bored? Not sure what to do.