However, its success is tied to sufficient habitat, which expands in cooler and more arid climate. Subfossil remains have been found, for example at Rocky Arroyo in the Guadalupe Mountains and Shelter Cave, New Mexico, where sufficient habitat no longer exists. The bones date found from the end of the last ice age to not much more than 8000 BC.
The species' success is tied to adequate habitat, which expands in cooler and drier climates. Subfossil remains have been found at locations like Rocky Arroyo in the Guadalupe Mountains and Shelter Cave, New Mexico, where suitable habitat no longer exists. The fossils date back from the end of the last ice age to roughly 8000 BC.