This is what little I wrote regarding FOXP2 in bats.
FOXP2 has diverged more in echolocating bats than any other group of vertebrates. This further implicates FOXP2 in sensorimotor coordination and vocal learning, which are requirements for echolocation. The same pattern could not be seen for echolocating whales, presumably because their echolocation is mediated through their foreheads and would not require sensorimotor coordination of their mouth and face.
I think the entries by Language Evolution and Neurophilosophy are a lot better, so if you're interested in the subject you should go and read those.
Swedish blog tags: Vetenskap, Biologi, Neurovetenskap, Språk
Technorati tags: Science, Biology, Neuroscience, Language, FOXP2