"A Bear's Autograph" - Bear marks on aspen in the Culebra Range, east side of the San Luis Valley, Colorado."The Bat Vortex" - During spring and summer evenings, 20 million bats emerge from Bracken Cave (north of San Antonio, TX). They fly out of the cave in a spiral flight pattern. This bat colony is the l"Freewheeling" - Actually, these bats are anything but freewheeling. As 20 million of them emerge from Bracken Caven each spring and summer evening, they fly out in a very orderly fashion (in a spiralRed Fox