We report the use and evaluation of various techniques to locate, identify, and observe our target species, the collared lizard (Crotaphytus collaris), while refuged inside rock crevices. We tested the use of radiotelemetry, visual observation via an articulating borescope, remote monitoring of passive integrated transponder tags implanted into subjects as they entered and left refuges, and the measurement of body temperatures of subjects inside refuges. The combined set of techniques provides reliable results and has the potential to uncover novel behavior and social interactions of occupants of otherwise inaccessible refuges or burrows for a host of wild animals.