Janzen found that molecular evidence differed, often sharply, with the territorial boundaries of subspecies named on phenotypic variation. Like all snakes the San Francisco garter snake is carnivorous, feeding on frogs, newts, salamanders, fish, and worms. Young snakes depend on Pacific tree frogs. This subspecies is extremely shy, difficult to locate and capture, and quick to flee to water or cover when disturbed. This garter snake prefers wet and marshy areas, and because of its elusive nature, it is difficult to see or capture. Their bites are fatal to their prey, but only cause a mild irritation for humans. Many of the factors that led to the listing of the San Francisco garter snake in 1967 continue to affect the subspecies. When endangered, a snake will primarily attempt and escape. This result strongly suggests that the color traits that are diagnostic for T. s. tetrataenia are the result of local selection, rather than long-term isolation from the other subspecies of T. sirtalis in central California. However, in many areas where it still occurs, it is not rare, but is actually quite common and can be viewed with good success once its behavior is understood. Scientific names are in Latin or Greek. You can help by keeping your pets where they don't harm snakes. Sacramento Fish & Wildlife OfficeServing the people, conserving the fish, wildlife, and plants of California. San Francisco garter snakes are one of the few animals able to eat the toxic California newt without suffering serious side effects. These historical threats to the species remain, but there are now additional threats, such as the documented decline of the California red-legged frog (an essential prey species) and the introduction of bullfrogs into San Francisco garter snake habitat. Large adults can reach a meter (3 feet) or more in length. Many locations that previously had healthy populations of garter snakes are now in decline. amphibians are called herpetologists. Endangered. SF garter snakes are active during the day. In California, only rattlesnakes have venom that is dangerous to humans. The San Francisco garter snake is considered by many the most beautiful snake in the world. The stripe pattern that runs along the snake's "shoulders" is black, red-orange, black. Wherever you live in California, there are zoos and nature centers where you can see and learn about snakes. (3 feet). Endangered. Read a storyabout how we obtained 10 of these snakes. Barry petitioned [5] the International Commission on Zoological Nomenclature (ICZN) to suppress the changes proposed in 1996 to merge two of these species. They use rodent burrows for this. Temporary ponds and other seasonal freshwater bodies are also used. Farther inland, they may be active year-round. Working to reduce the effects of contaminants and other stressful impacts on fish wildlife and their habitats and to plan, implement and monitor restoration projects so that fish and wildlife resources can be recovered. ", Large adults can reach a meter in length. SF garter snakes sometimes go into a dormant state during summer months when their ponds dry up. Sacramento Fish & Wildlife OfficeServing the people, conserving the fish, wildlife, and plants of California. The beautiful San Francisco garter snake can be seen in the western parts of the San Francisco peninsula, around hillsides from the San Fran. Providing information and assistance to Congressional offices, other agencies, media outlets, and the general public about Service activities. Illegal collection. (These are listed as threatened!) Their head is barely wider than the neck, and is red. Much of this range is private land. Anyway, it is against the law to mess with endangered species.

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