Have a chicken that we noticed was very unstable on her feet. She struggles to sit with her legs under her and just topples over. We pulled and quarantined her 2 days ago from the rest of the flock and started to give her electrolytes in her water, scrambled egg and 3cc of Rooster Booster Poultry Cell and 3cc Rooster Booster Liquid B-12 plus Vitamin K daily. So far, no improvement. She was vaccinated for Marek's at the hatchery. Comb is red but noticed today her throat area is loaded with these hard chunks that are at the skin level. I pulled one free and took a photo which is attached. This may have nothing to do with her current issues. Her poop is solid and normal.