someone mentioned that chickens can give ducks diseases but on this same website but in another forum post on keeping ducks and chickens together most people said it was fun except for the occasional bullying. i cant find anywhere of chickens passing diseases on to ducks thought im sure it can happen and what are the risks? i currently have 4 mallards, 2 cayugas, a pekin and a bluie swedish with 2 NH reds and 2 chicks that are almost ready to join the bunch so in total i will probably have 4 chickens and 8 ducks in a 30x30 run. it is muddy by the water but not to bad, will this breed disease? and if i have 8 ducks and 6 hens is that to much and will disease spread, i notice no bullying and they have been together since almost day one and huddle on the floor to sleep together at night. the ducks are almost 2 months and the chickens around 1.5 months.