I have one hen who not only lost most of her feathers and not sure why but now has a lump by her throat. She is only 18 weeks and this is my first flock of chickens. I don't have a way of separating her and not a lot of money to spend on something either. I noticed the lump earlier this week while checking on them before they went in the coop for the night. The next morning the lump seemed to be gone but came back later on the day. It's like it comes and goes and I have no clue what it could be. I have a total of eleven hens and she is the only one who lost features and has this lump. She seems to eat and drink just fine as well. Any help I could get would be great.