This pie chart shows the relative likelihood of observing particular other species commonly observed near Crotalus tigris

Range and Population:

The species' range extends from central Arizona south through south-central Arizona in the United States (Lowe et al. 1986, Painter and Milensky, 1993, Howland et al. 2002), to southern Sonora, Mexico, including Isla Tiburon in the Gulf of California, at elevations from sea level to about 1,465m asl (4,800 feet) (Stebbins 2003, Campbell and Lamar 2004). Reported occurrences at higher elevations have not been confirmed (Campbell and Lamar 2004).[1]
Countries:Native:
Mexico; United States

[1]
Population:On a range-wide scale, Campbell and Lamar (2004) mapped 33 collection sites. Lowe et al. (1986) stated that the species is known from approximately 100 localities throughout the range. The adult population size is unknown but presumably exceeds 10,000. This snake is fairly common in some areas, but "some local populations seem small" (Ernst and Ernst 2003). Its extent of occurrence, area of occupancy, number of subpopulations, and population size are probably relatively stable or declining at a rate of less than 10% over 10 years or three generations. Population Trend: [1][1]

Ecology Notes:

The species' habitats include rocky desert canyons, foothills, and bajadas, in vegetation zones ranging from thornscrub, ocotillo-mesquite-creosote bush, saguaro-paloverde, mesquite grassland, and chaparral to tropical deciduous forest (southern Sonora) and the lower edge of oak woodland (Behler and King 1979, Lowe et al. 1986, Ernst and Ernst 2003, Stebbins 2003, Campbell and Lamar 2004). In southeastern Arizona, this snake occurs strictly in rocky areas in winter and spring but uses edges of arroyos in summer (Beck 1995). It is a terrestrial species but may climb into low vegetation.[1]

List of Habitats:1.4Forest - Temperate 1.5Forest - Subtropical/Tropical Dry 3.4Shrubland - Temperate 3.5Shrubland - Subtropical/Tropical Dry 3.8Shrubland - Mediterranean-type Shrubby Vegetation 4.4Grassland - Temperate 4.5Grassland - Subtropical/Tropical Dry 6Rocky areas (eg. inland cliffs, mountain peaks) 8.1Desert - Hot 8.2Desert - Temperate

In sections below, we make some habitat inferences based on the known habitat preferences of those species most commonly associated with Crotalus tigris.

Zone:

alpine, montane, temperate, tropics.

Vegetation:

alpine meadows, boreal forest, coniferous forests, cultivated areas, deciduous woods and forests, desert, desert scrub, disturbed sites, fence rows, fields, forest edges, forests, gardens, grasslands, hardwood forests, mature forests, meadows, montane forests, open forests, pasture, pine forests, plantations, rain forest, shrubby vegetation, thickets, tropical forest, tundra grassland.

Terrain:

dry slopes, flood plains, hillsides, mountain slopes, pastureland, plantations, roadsides, rock outcrops, rocky soils, streamsides, urban areas, valleys.

Soil and Rock:

clay, gypsum, limestone, loam, sandy areas, sandy soil, stony areas.

Water in Area:

along rivers, bays, bogs, brackish water, ditches, dry areas, estuaries, flood plains, lagoon, lakes, marshes, mesic areas, ponds, river banks, rivers, saltwater, shores, stream banks, streams, swamps.

Slopes in Area:

hillsides, rocky slopes.