Help I have a small flock of 6 birds and brought a couple of new girls home a week ago. They're in isolation from my main flock but one of them is coughing and neither are eating or drinking much. They seem mostly OK in themselves, a little lethargic, but its very hot at the moment but one of them continues to be coughing and sneezing. It's my first time dealing with respiratory issue and my local vets are hopeless with chickens. I currently have them on pellets with flubnavet for worming as they'd only previously had verm-x. Any suggestions? Should I be exploring an antibiotic like tylan?