Hi, our first brood of chicks are three weeks old today. There are four of them and we incubated the eggs, so there's no mother hen. One of them has got some bleeding this morning, just about its foot - not too much, but we think it's probably been scratched by one of the others. For now, we've put it in a cardboard box, half under the brooder and half not, so that the others won't peck at the sore patch. What else should we do? The others are definitely starting to square up to each other a bit - we weren't expecting that kind of behaviour until they were older! I'd be grateful for any advice.