one of my chickens had a black looking scab, i thought it was just something stuck on its face so i tried getting it off, i got it off but there were some down feathers stuck to it. under it looked like a puncture wound, it was a bit swollen and red. i thought it could be from her trying to get out through some broken wire (i have an old coop, i plan to replace the wire) but I'm not sure. she eats and acts normal. shes about a month old. i couldn't get a picture because its hidden with feathers and she wouldnt stay still.