Crotalus willardi willardi The same day we found our first obscurus, we booked it into Arizona and as it got dark, Derek found a pair of will wills. Cochise County, AZ. August 2008. A female from the Huachucas. Cochise County, AZ. August 2009. The prettiest will wills I have seen have been from the Patagonias. These were spectacular. Santa Cruz County, AZ. August 2010. An orange-ish willardi next to a normal looking one - found together. Cochise County, AZ. September 2011. Female of a pair found by Riley. Cochise County, AZ. August 2012. Snake in the grass. Cochise County, AZ. August 2014. Pretty young one. Cochise County, AZ. August 2018.