We got this rooster and 12 chicks about a month ago. He was healthy up until 3 or 4 days ago when he couldn't crow. Now it looks like he's struggling to breath and it's real raspy. I've separated him from the flock, but is there anything I can do for him? I did some research and what I read sounds like infectious bronchitis and should pass in a week or so. Help?? Thanks!