One of my RIR hens (5&1/2 months old) has been lethargic for about a week. I isolated her, as she just lays around and doesn't seem "right." Her color at the head is still bright red, but her legs are not as yellow as her sister's. Her feathers seem normal, and until yesterday her tail was up. Now it is down. She drinks plenty of water and eats a little. She is feeling much lighter weight wise. Sometimes she seems fine on her feet and sometimes is weak and stumbles a bit. Her crop seems normal. She had some pasty poop around her vent, but her vent was clear. I cleaned the feathers around her vent several days ago and this hasn't been a problem again. Now her poop seems more watery, but no blood. I bathed her today in warm water and tried to feel for an egg, but it didn't feel like there was anything there from the outside. She hasn't laid an egg yet, so this would be her first were she to be egg bound. This is my first sick chicken, so other than reading a bunch on here I don't have much to go on.