No, they're not "gardner snakes" or "garden
snakes." They are garter snakes, named after the striped garters that
embellished many a lady's leg in the distant Twentieth Century. A snake that
bites, thrashes around, and emits a foul-smelling fluid when handled probably
wouldn't make a very good garter, however.
The first stage of predator avoidance is to flee, and
snakes—notwithstanding their lack of legs—are superb at that. If not entirely
out in the open, as for example when they cross roads, they quickly disappear
into the vegetation when disturbed. If captured, the larger ones have no
hesitation about biting to defend themselves. A bite from the many sharp teeth
of just about any snake will bring out a series of four-letter Anglo-Saxon
words such as "ouch" and "rats."
Whether they bite or not, some snakes are sure to wind their
body around the captor (or the captor's arm, in the case of a human) and
discharge a smelly fluid consisting of mixed feces and urine and a musk
produced in the cloaca. If you must catch one, securing the tail is just as
important as grabbing the head.
Most garter snakes have a middorsal pale stripe and a pale
stripe low on either side. No other common northwestern snakes share that
pattern. Although the scales on their underside are smooth, garter snakes have
keeled dorsal scales, which gives them a rough appearance and feel. They are rarely
more than three feet in length, and most are much smaller.
There are three common species of garter snakes in the
Pacific Northwest, but there is sufficient variation in all of them that
identification is not always easy.
The Common Garter Snake (Thamnophis
sirtalis) occurs all across North America. The ground color is dark, with
the typical light stripes. Our populations usually have red spots along the
sides, but the darkest individuals can show very little red; look closely. In
western Oregon and southwestern Washington, the head is largely reddish.
Western Terrestrial Garter Snakes (Thamnophis elegans), widespread in the West, never show any red
markings. Populations in our region characteristically show a series of
alternating dark spots in a checkerboard pattern on a lighter ground color, still
with the normal three stripes. There are melanistic populations in the Puget
Sound region, some individuals almost entirely black.
Northwestern Garter Snakes (Thamnophis ordinoides) are restricted to the Pacific Northwest,
mostly west of the Cascades. They are smaller than the other two species, with
a relatively smaller head. The head is somewhat lighter than the body, with a
contrasting dark stripe through the eye. This species is very variable, from
very dark with contrasty yellow stripes to a lighter color with dark markings
not so different from those of a Western Terrestrial. Some individuals have a
red dorsal stripe or are largely reddish above, unique to this species.
Common and Western Terrestrial Garter Snakes eat mostly
vertebrate prey, especially fishes and amphibians, but both may take any other
small animals that they come upon. Because of their primary diet, they are commonly
found around water, even in it (notwithstanding "Terrestrial" in the
name). Northwestern Garter Snakes are invertebrate feeders, capturing mostly
slugs and earthworms. This correlates with their smaller head and mouth and
entirely terrestrial existence.
Garter snakes are common throughout the warmer parts of the
year. They disappear by October, sheltering underground where possible.
Sometimes numerous individuals den together, perhaps conserving body heat by
being tightly packed. They are often the first snakes to appear in spring,
sunning themselves in exposed places near where they spent the winter in
dormancy. Like all reptiles, they use the sun for thermoregulation.
Garter snakes are the only common snakes in the wetter parts
of the Pacific Northwest, and they are often found in suburban parks with natural
habitats remaining. Their continued presence is a great reason to preserve
those habitats.
Dennis Paulson
9 comments:
Thanks, Elena. There aren't a lot of comments, so I don't look for them most of the time, but any like this are appreciated.
Dennis
We have a garter snake living in a crack between our back cement steps and the house, near a rockery and some ground cover. The kids have named him "Sam the Snake"
The odd thing that I am curious about is that he actually hangs out and lives with a small salamander...I mean they really seem to be friends...it's the oddest thing I have seen. Is this normal?
I Need Some Help. I Have A Very Small Snake Living In My Semi Truck. I Don't Know The Kind Or If Poisons So Can You Help.It Is Green With Red Spots The Spots GO AcrossThe Body And Are Just Behind The Head To Its Tail.CAme With Truck
I recall the Reptile Man coming to our school for an assembly. He taught us how to identify non-venomous to venomous snakes by colour. He said, Yellow over black, he's an okay fellow. Red over black, you're dead, Jack. I live in Vancouver, Washington in the PNW and to my understanding we do not have any venomous snakes in this part of the region. Today on my walk I saw a (what I believe to be)red striped Garter Snake. Does the Reptile Man's saying apply here? Red over black, you're dead jack? Please advise. Jim
We were able to observe a garter snake devouring a slug in our yard today. It was fascinating and my oldest granddaughter was attentive to the event. My question is about the coloring of this particular snake. He was dark with dark tan stripes, really beautiful. Looking up different types, I couldn't find this particular coloring. Any ideas? We live in Enumclaw.
I grew up in West Vancouver, on Vancouver's North Shore in the 1960's. At that time we would regularly see Garter Snakes in our garden. I still live on the North Shore and never see them anymore. Does anyone know why they've disappeared?
I used to live in Washington, grew up there, both sides of the mountains. I loved catching snakes. I was told at a young age that that snake you are describing was called a Red Racer, later learned it is just a dorsal striped Garder. They are not poisoness, just very aggresive with bigger teeth. That old color rhyme saying is a warning about the most venomous snake in America called the Coral Snake that can be confused with a couple types of Milk Snakes and King Snakes which are completely harmless and make great pets.
I just used your page to identify the Northwestern garter living in my garden in Salem, so thank you. If he or she is eating slugs, all I can say is "Bon appetit!" My dahlias appreciate the help. I've seen the garter every couple of weeks so far this year, always in the same area, so I'm careful with walking and tools--don't want to injure it.
Snakes are so cool.
Grateful for ssharing this
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