I have an 8 week old Cuckoo Maran pullet that I noticed yesterday was sneezing and coughing a really deep mucus-y/gurgly sounding cough but it is not constant or even often for that matter. I took her inside and put her in a large cat crate with food and water to isolate her from the flock and be able to keep an eye on her. She is crying for the others because she has never been alone and the cry sounds a little funny, deeper, and scratchy somehow. She is eating like a champ, sleeping fine, drinking great, and her poo is normal. She does not feel too hot or too cold. I looked in her nostrils and mouth with a light and she has no discharge from either area of any kind. Her nose is clear and not gunked up or anything. She walks around fine, scratches at the ground, does normal chicken things. Just the occasional coughing and sneezing fit that lasts a couple seconds. Any ideas? I'm heading out to the coop now and plan to watch for a few to see if any others look off.