every night when I go to check on the chickens to make sure they're inside their house, yesterday and today the little roo sounds like he's gurgling and he tries to go to sleep but he wakes up about every 3minutes and makes and awful squaking sound. Also he is breathing through his mouth. During the day he acts normal but around 4 to 6 he started acting this way. Does anyone know what's wrong and how I might treat him? Thanks in advance.