Foraging behavior and spacing patterns of the lizard Cnemidophorus uniparens

Home range (HR) and core area (CA) estimates were developed for members of a Cnemidophorus uniparens population from southeastern Arizona. Lizards tended to concentrate activity in a small portion of their Hn with roughly 50% of activity in a CA consisting of 10% of their HR Body size was negatively correlated with HR and CA for long-term residents and positively correlated (HR) or uncorrelated cca, for transients. HR overlap was extensive, but CA overlap was minimal with many individuals using exclusive CAs, Resident lizards had relatively low HR overlap with other residents, while transients accounted for most of the HR overlap with residents and other transients, There was no relationship between HR size and amount of HR overlap for either residents or transients, although there was a positive relationship between HR size and the number of overlapping neighbors for both. Resident CA size was positively correlated with overlap and number of neighbors Transient CPI size showed no relationship to overlap or number of neighbors, Fossorial prey, particularly termites, were numerically most abundant in the diet Digging activity was concentrated in a small portion of HR, There was no evidence of lizards using consistent routes to search for termites; most digging episodes were unsuccessful.