. Montana amphibian and reptile status assessment, literature review, and conservation plan. Amphibians; Reptiles; Indicators (Biology); Habitat (Ecology); Wildlife conservation. Western Fence Lizard (Sceloporus occidentalis) Up-to-date distribution and status information can be found on the Montana Natural Heritage Program's TRACKER website at Distribution/Taxonomy The western fence lizard is a member of a large genus of North American lizards found from Panama to the Canadian border. The closest relatives include five additional species in the Udulatus group (Wiens and Reeder 1997
. Montana amphibian and reptile status assessment, literature review, and conservation plan. Amphibians; Reptiles; Indicators (Biology); Habitat (Ecology); Wildlife conservation. Western Fence Lizard (Sceloporus occidentalis) Up-to-date distribution and status information can be found on the Montana Natural Heritage Program's TRACKER website at Distribution/Taxonomy The western fence lizard is a member of a large genus of North American lizards found from Panama to the Canadian border. The closest relatives include five additional species in the Udulatus group (Wiens and Reeder 1997). The western fence lizard occurs from northern Washington, south through Oregon, southwestern Idaho, Nevada, western Utah, and most of California, into Mexico to northwestern Baja California, at elevations from sea level in Washington, Oregon, and California to 3,300 m (10,800 ft) in California (Nussbaum et al. 1983, St. John 2002, Stebbins 2003). Six subspecies are currently recognized. The subspecies present in Montana is the northwestern fence lizard (S. o. occidentalis), which is found along the Cascade Mountains. In Montana, there is a single known population, along the lower Flathead River near Perma on the Flathead Indian Reservation in Sanders County (Werner 2008, Werner et al. 2004). The Montana population is isolated east of the main range of the species by about 250 km (150 miles). It is unknown for certain whether this population is native or introduced, but it seems likely that the population was introduced via a train because a major rail line is immediately adjacent to the population and the population seems to be expanding (Werner 2008). Maximum Elevation 762 m (2,500 ft) in Sanders County (Werner et al. 2004). Identification Eggs: Eggs are white, leathery, and oval, about 14 mm ( in) long and 8 mm ( in) wide. Clutch size is usually 4-17 eggs (averaging about 8). Clutches are laid in loose soil in shallow cavities 428. Please note that these images are e
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