I need help on how to treat my little hen. She’s not very old… hatched April 11. She’s been with the same group since hatch day and no problems so I’m not sure what’s happened. I noticed the rooster trying to get her but I thought that was normal behavior. This isn’t. She’s the only girl with any sign of injury but it’s awful. I’ve moved all my girls out of there. This happened in a matter of a day and a half. I hope the pictures attach. I have some of that blue stuff but idk if I should use it on this. Thanks in advance, any help is greatly appreciated.