I'm assuming it's from pecking? There are 6 chicks total (about 3.5 mos. old), but they hang out in 3's, only 2 had the blood, both from the same '3'. I was out there with them while they were running around for more than an hour tonight, trying to see who was doing what, but I really couldn't tell. First I thought the one without blood on her face was doing it, then I wondered if the 2 had done it to each other? What do I do? Separate? But who do I separate? I'm so bummed.. I guess I didn't know my chicks were having a hard time or whatever. They have plenty of room and food. I did introduce a new chick last week, but they barely even notice her... she's part of the other '3' (silkies).