I recently sold some Brown Shaver pullets around about 20 weeks old to a friend of a friend of a friend. He has come back to me to say he wants some more as he has had deaths, but I don't want to sell him any more of my girls until he figures out what killed the last ones. He had two existing hens, then got two from me, one at a time. I did try and resist selling them one at a time because of potential bullying. I think the deaths were the one I sold last week :-( and possibly one of his other ones. I have asked him to check their area for anything poisonous (rat bait/ plants etc) but I am stumped for any other ideas....and I need help please if anybody has any more ideas? He denies that he has red mite in the house (it is the end of summer over here), nor does he think it was a dog attack or other predator. He says they looked a "little less energetic' for a couple of days and then he found them dead in the house. They were vaccinated against Mareks disease, and seemed strong and healthy when they left here. I haven't had any deaths here (except for one very elderly lady aged at least 6 years old) He feeds them layer's pellets each day, they have fresh water every day and he says he cleans out the house regularly. He wants to come and get two more pullets to replace the ones who died, but not until we know what killed the previous ones!