My chickens and guinea fowl are only 9 weeks old. It has been unseasonably hot here for so long (80s/90s) and they were all doing great. Then suddenly the temperature dropped (today it is high 50s) and they're acting odd. They are standing around in a loose circle eyeing me, quiet little chirps, almost lethargic, or acting as if they're frightened to come out and play. Usually they run excitedly outside when I open the outdoor run. Is it too cold for them now, or are they experiencing their first sudden shift in weather?