Some of my hens have got some dirty bums and seem a little itchy. I'm thinking mites. What exactly are mites? what do they do? can my birds die ? how to i take care of the problem? and can I buy what I need to at IFA if there's a way to fix the problem? Not all of my hens have this problem and I'm thinking it might be because they're getting old. I don't know. I'd just like to have a little bit more information. Thanks! oh, and I was wondering about ants as well. They aren't fire ants but recently I've noticed a lot of little black sugar ants in a part of my coop, the part where I've got a broody hen sitting. She's due in a week. I thought chickens ate bugs, so are they there just because she's not eating a lot? are they going to be a danger to my chicks? what's a good way to get rid of ants without hurting chickens?