I have 2 week old broilers for kids 4-H project who sound as if they have a stuffy nose. I dont see any sign of mucous drainage though. They are in my garage under heat lamp, separated from my free-ranging laying chickens. They have not been outside. Noticed this symptom yesterday. Seem to eat and drink well enough. Not very energetic as they just lay around most of the time. But i am told this is normal for the breed (first time to raise). What could be the problem and what can i do for them?