OMG, I just went out to the coop with a flashlight to check on my Frizzle chicks thats just hatched out today and stepped on a 6 week old Sizzle chick. My coop and run are secure, so I leave the coop open at night and some of my chickens roost on the stairs into the coop. While coming out of the coop, trying to protect the eggs the new momma hen pushed aside in the nest (wanted to candle them) I accidentally stepped on the Sizzle chick that was sitting on a step. I was trying to get foot placement between the chickens and didn't see her. She squawk loud and ran off, then laid down on her side with a leg stretched out. After examing her I found no visible or palpable injuries. She is breathing a little rapidly and slightly labored and gets a wheeze then sneezes and it almost completely goes away, then comes back. She is walking okay. I put her near the heat lamp in the coop. I think she may be a little shocked. But I am afraid there may be some internal injury, such as a lung, because of the slightly labored breathing. I palpated around the neck and chest area and everything felt okay externally. This all just happened about 10 minutes ago. I am going to give her time to relax a bit, then check on her again. Any ideas?