I have just bought 12 hens and 1 rooster from a guy on a farm. raised them from eggs, half where pullets due to lay in middle OCT, the others are laying age. no need to quarentine because I had no others. I have had them for 2 weeks, then 3 days ago I noticed one not eating and kind of hanging out on it's own, She was breathing heavy and weezing a bit. but no one else was, then the next morning DEAD and she was on of the older ones.. everyone else seems very healthy and eating well.. I have chicken haven for them I think, really nice place and plenty of food and fresh water. Then this morning another one was having a hard time breathing and not eating all of the fresh veggies and fruit I just put down, she was standing off by herself, then I had a guy come put a new internet system in and install some stuff and go back out to gather eggs and she was dead,, HELP I don't want to loose any more. I have called the guy I got them from but he is out of town at a horse show or something.. please help save my Chickens. any ideas would be great thanks