by IowaNate » Tue Nov 25, 2008 7:49 pm
I think that placing him into the chimney and screening over the hole into the basement is the best option for it's survival. :D Even though you did not state where you live, I am about 90% sure that you have a big brown bat (Eptesicus fuscus). They are extremely resilient to colder temperatures, and it should find it's way out in the Spring or during a period of warmer weather.
Nate