I bought home 7 week old Buff Orpington chicks today...one has what looks like a broken toe..the end of her toe is black and the toe is deformed..does not seem to bother her and the store gave her to me free because of the injury...but once I bought them home I noticed one little chick is lethergic...she eats and drinks and moves around...but does not peep..and sleeps most of the time. She is kind of fluffed up more than the others and sits there with her eyes closed..I gave them all electrolytes and medcicated feed..any adice as to what it could be?