I could really use some advice. I have three chickens who have decided they don't care for the snow. While they stayed in their coop for 3 days, they developed a feather picking/eating habit. They are picking rump feathers about an inch below the vent. One is getting bruised and pretty bare down there. I tried Hot Pick, but I don't know how often or how much to spray one them. It hasn't seemed to work very well so far. I have also been giving them more protein (BOSS and meat). I'm afriad they are going to pick each other bare, or pick too hard and cause bleeding. Help please!