Thin-bodied; football-shaped profile. Silvery gray, occasionally brownish. Deeply forked tail. Common central California to B.C.
Undercolor pale, red bars often shaded with brown. Mature males often turn nearly black during winter mating season. Occasional southern California to BC.
Mottled, spotted and blotched earthtone shades; usually several saddle markings on back. Abundant Alaska and Washington, occasional to rare to S. California.