A Grand Canyon Rattlesnake from northern Arizona. In time, the pattern on this snake may continue to degrade and fade, but not to the same degree as is common for females of the species.

A Grand Canyon Rattlesnake from northern Arizona. In time, the pattern on this snake may continue to degrade and fade, but not to the same degree as is common for females of the species.

A Grand Canyon Rattlesnake from the northernmost part of Arizona.

A young Grand Canyon Rattlesnake found in the rocks alongside the Colorado River. This young male’s will fade considerably as it ages, but will likely not become the nearly unicolor look of mature females.

A Grand Canyon Rattlesnake found near its namesake a few years ago. This one is still pretty sharply patterned for a snake of this age.
