MEXICO: Durango; near Otinapa - female - July 2007
(snake is pre-shed)
MEXICO: Durango; near Otinapa - 2 snakes thermoregulating in crevice - July 2007
snake at right is above female prior to extraction for photography
MEXICO: Durango; near Otinapa - adult theromoregulating in same crevice as two snakes above - July 2007