I did something I know I probably shouldn't have about 3 weeks ago and bought 5 adult chickens. I put them in a seperate coop/run from my other chickens. Everyone seems pretty healthy, but after he crows the rooster has a raspy breath, almost like he is having trouble getting air back into his lungs. Often he shakes his head sideways after he crows and breathes in. The only other time I heard him have trouble breathing is when he was chasing another chicken around the pen he got winded pretty quickly. Here is a video of him crowing and the head shake/wiggle. You have to listen pretty closely at the end, it sounds like air beign sucked back into a fireplace bellows. Since adding the video did not work, I am editing this post to add a youtube link: http://www.youtube.com/watch?v=iTzD0O1XsM0 He has no other symptoms, his nose is not snotty, no sneezing, no coughing. All of the chickens have red combs and have put on weight. They were wormed 12 days ago with Valbazen and then again 2 days ago as a follow up. I have been giving them occassional scrambled eggs, buttermilk with oatmeal along with vitamins and electrolites in their water. They get free choice Purina Layena with Calf Manna mixed in. Any thoughts on what this could be? At first I was thinking he might have gapeworms, but the Valbazen should have knocked them out, right? Should I try an antibiotic? Am I just being an overly cautious mom? I am open to suggestions. Thanks for your help!