When Hurricane Ivan devastated Grand Cayman in 2004, there were fifty bat houses mounted on utility poles. All of these survived storm winds of over 200 mph for over 36 hours, much of it in the eye-wall, and only lost a little paint. All the bats inside them were alive and well. Even the roof shingles stayed on - (we had both glued and nailed them very tightly and used all stainless rust-proof screws and nails in construction). We are grateful to  Caribbean Utilities Co Ltd for the donation of the strong, well-installed poles that withstood the storm and to Ron Moser of The Machine Shop for his excellent design and carpentry skills. These donations are key to the success or our work. bat houses and as of April, 2011 there are 116 bat houses. 82 are confirmed to have colonies of bats living inside them so far this year. Many thanks to Wil Steward of CGMJ and Kelly Hill of ShedWerx for re-drawing the updated 2011 Bat House Building Plans.