I have different breeds of chickens, Sultans, Silkies, Cochins, Crevecoeurs, Orpingtons, and Pyncheon. Can any one tell me why some have a very runny pooh, and others don't? Is it there breed or what I'm feeding them. They get Crumble and Laying Mash. As a treat I will give them a little white bread. They were all born about 3 to 4 months ago. Growing very well, healthy, and all very friendly. 1 hen 2 roosters = sultans 1 hen 1 rooster = silkies 2 roosters = Creveceors 2 hens = orpingtons 1 hen = pyncheon 1 hen 2 roosters = cochins All in 1 pen and very happy.