The hoary bat is similar in many ways to the silver-haired bat, although it Is in an entirely different genus (Lasiurus vs Lasionycteris). It is a migratory tree bat with rounded ears and silver frosting on its fur and does not hibernate in caves. It does, however, have quite an extended range, being found from Canada, across the US and all the way down to South America. I caught quite a lot of these in the mountains near Monterrey, Mexico some years ago. And speaking of wide-ranging, this bat can also be found in Hawaii and the Galapagos Islands. It is often considered one of the most beautiful bats in the United States.
Keith Christenson - Wildlife Biologist