I have 4 chickens (just about a year old) that seem to have developed wet lung sounds. They are balking and gurgling 3 of them are EE's and I havent been getting eggs from them. Any help would be greatly appreciated. Nothing has changed, diet, housing ect... It has been raining and wheather is changing from low 40 to mid 80's (crazy Indiana weather). Wonder if they just have a cold or is it something I need to worry about?