Out on a road trip looking for some panning spots, I wound up by Watson Lake on the Poudre River by the sluiceway cruising along on the bicycle, enjoying the scenery. And low and behold, I hear the "SOUND". Kind of sounds like a cicada, but much slower and deeper. I stop mid trail, and do a quick look see on the ground. Damn, a Western Diamondback (Crotalus atrox)... Passed less than two feet from it.
This guy is sporting his tenth rattle, and was loud, but I couldn't grab the sound with the camera microphone over the sound of the river. The image links to the high resolution version.
Condolences to the friends and family of the individual who passed away today on the Poudre River while rafting.