Found on the Mesquite Trail; 16-17 rattles on tail.
Unsure between C. coelestinum and C. betonicfolium
Long-tailed Weasel at Laguna Atascosa National Wildlife Refuge. A pack of 7 individuals was observed running together.
Caught by a long-tailed weasel: http://www.inaturalist.org/observations/1185997
There was a family hanging about the visitor center. With the bird feeders, I'm sure there was plenty of prey, like the rat in the photo. Two adults and two young were observed.