my neighbors chickens are dying! she told me that her sons chickens eyes are swelling shut and then they quit eating and fall over dead. what is wrong with them. he does not know what to do for them. he said that they had sores on their beaks but not in their mouth and their eyes were bubbly to begin with then swelled shut, with crusty like stuff on them. they did not rattle or wheeze, when their eyes swelled shut they quit eating and then died. he is really needing help he doesn't want to loose his whole flock. he just lost 2 babies today