I have three chicks that are about 4 and a half weeks old. I took them outside for the first time on wednesday and this morning I awoke to find this on a paper towel roll they had in their cage. I have never seen any blood in their cage before and they are all eating and drinking normally. One bird did seem a little sleepier then normal last night but they seem to go through stages where they sleep more then other times. I would not say that any of them are lethargic. As I am new to owning chickens I don't know what I'm looking at. Any help would be greatly appreciated. I'm at work now and the local chicken store does not open until 11 so I'm trying to think good thoughts and not worry to much but they are my babies. Thanks!