My 2 year old light brahma suddenly got sick. I noticed sunday she didn't come at treat time. I checked her over for unjuries and noticed her abdomen was hard. I gave her several warm bathc thinking she was eggbound. Yesterday she acted the same and ate just a little so i checked inside her and there was no egg. I could feel a large hard mass in her abdomen just below where my finger wad.Today she had this odd poop and is not eating or leaving the coop. Its yellow with bits of green. She's one of my lap chickens and I'm very worried. I don't know what to do for her. Please help