hey i have to buff sussex chickens (12 week old) i bought on sunday last in wexford (ireland) i bought them off 2 different people.It was only when i got home i realized 1 of them had a sneezing type of thing the poor thing sounded really caught up lyke a bad cold and had runny yellowish poo?? the other buff sussex is ok i have the 2 of them together but the other 1 is ok and doesnt seem to be picking up the symptoms. i have been reading up on the internet and it seems it has CRD!!! is this true??? please tell me how to cure it.