Well i'll stand corrected if thats ture Obee, i have heard of it happening but those reports have been dodgy at best, every other attempt i've seen has ended in faliure.
Have you noticed any other problems, are the able to behave normally? Humidity seems to make them slugish around here even the wild ones.
Though i might add that it does seem like alot of hassle and worry when you could keep them inside, but why not i guess.