Adult male crossing roadway in late afternoon. Imaged only. GTS 819. UTA DC 7312 (University of Texas at Arlington Digital Collection).
Young adult male crossing roadway (mid-afternnon). Imaged only. Not touched. GTS 812. UTA DC 7310 (University of Texas at Arlington Digital Collection).
We found it sitting in the middle of a road while we were driving, so we stopped and got it to move back up into the leaf litter.
As my luck would have it, I didn't have my good camera with me...
Another member of our group found this one.
Found on dirt road next to woods.
This was a very small (11-12 inches) rattlesnake - a juvenile - who happened to be sunning itself on the dirt road as I was biking past - along the Missouri River near Great Falls.
Crotalus is a genus of venomous pit vipers found only in the Americas from southern Canada to northern Argentina. The name is derived from the Greek word krotalon, which means "rattle" or "castanet", and refers to the rattle on the end of the tail which makes this group (genera Crotalus and Sistrurus) so distinctive. 32 species are currently recognized.