The 25 February 2011 Volume 331 issue of Science, a publication of the American Association for the Advancement of Science published the following article:
Researchers Use Weather Radar to Track Bat Movements
A new field of study called aeroecology looks at the interactions between flying animals and their airspace. Using weather radars, a bat ecologist has discovered that the weather strongly affects the behavior of at least one species. Brazilian free-tailed bats, common in the south-central United States and Mexico, emerge from their daytime slumber at different times of day depending on the temperature, she and her colleagues reported on 19 February at the AAAS annual meeting (see p. 995 and here for more meeting coverage).