I have a friend who has say, 30 pullets, and only 1 roo. This doesn't bother him, we gave him a gorgeous Australorp roo last year, but he died mysteriously. My question is: are there particular pullets the roosters prefer? I was visiting him the other day and heard what I thought was "egg song" from the coop so went to see...he had 3 pullets in there nesting, all 3 had completely skinned backs...it was gross, all without feathers. I knew it was/is from the rooster, but none of the other girls were like this...I personally think he needs to isolate those girls till they recover, or get a new rooster? They are BO about 1-2 yrs old. Ideas from anyone? Like I said, not my chickens, but if it happens to me, I want to know what everyone else thinks?