My ten year old BO hen, Kate Smith, (so named because of her one time girth) has gotten very skinny. I checked for a number of things and ascertained that she had lice . I sprayed her vent and under her wings with Poultry Protector and the next day I didn't see anything! Now I know that doesn't mean they are gone but it is 20 degrees here and while I know I should clean out the coop and disinfect, the poop is totally frozen (deep litter) Anyway I brought her in the house because I don't think she was getting enough to eat because she tends to let everyone else eat first and you know what heppens then, nothing left but pellets. I situated her next to the furnace with clean hay and special food. I don't think she is sick at all, she is acting totally normal and eating and pooping nice looking poops. My question is, should she go back into the coop ? I don't want to have her gone too long but is it dangerous to take her from the warm house and put her back in the cold coop ?