Hi. I have 3 Barred Plymoth Rock Hens who are 7 months old. One of the hens, "Sleepy", has always been smaller and slower than the other girls. Also her comb never really got that big and has remained a dull pink color. Yesterday I noticed bubbles in one of her eyes. I was told by a vet the bubbly eye might be caused by an upper respiratory infection and he recommended tetracycline and wazine (de-wormer), just incase. I moved her into a large card-board box with towels in my basement and will start the medications today. I am worried about leaving her in the box, but I am also worried about leaving her outside. It is supposed to get cold here the next four of nights (20,15,then 9 &9). Do you think it will be ok to leave her out in the cold while starting medication? Will being inside in a card board box help her get well? Thanks any thoughts.