The Snakes of Narcisse
- Frequently Asked Questions
Can we pick up snakes?
 Yes.
Garter snakes are not poisonous. We encourage you to only
handle a snake in the presence of the site interpretive
staff. They can show you how to handle a snake properly
so that these fragile creatures are less likely to be harmed.
Snakes of any sex can be handled in the fall, but females
should be left alone during spring mating season.
How can you tell the sex of a snake?
One way to determine the sex is to study their behaviour. In spring, male snakes gather
in large numbers at the surface of the den waiting for a chance to mate with a female
snake. As each female emerges from her winter den she is vigorously pursued by a band of
males who entwine themselves around her to form a mating ball.
The one female is usually at the centre and lead of the mating ball as it slithers like a
tangled matt of spaghetti along the ground or up a shrub. In addition to physical
differences between the two sexes in the vent area, adult females are larger than adult
males both in length and body thickness.
Why are there so many snakes in the Interlake area?
Snakes, like all other kinds of wildlife, need food, water and shelter to survive and
produce young. While food and water are plentiful in Manitoba's Interlake region, and
other parts of the province, it's the availability of winter dens in limestone bedrock
that make this area an ideal home for red-sided garter snakes. It's only by amassing below
the frost line that snakes are able to survive Manitoba winters. The dens themselves, a
network of crevasses and caverns extending to the earth's surface, were formed by
underground water that eroded and collapsed the limestone.
Do snakes use the same den year after year?
In their first winter most juvenile snakes remain where they spent the summer - seeking
refuge in ant hills, animal burrows or any crevasse that will take them below frozen
ground. It's only during their second year that they migrate to an established den site
and continue to use it year after year. Although most adult snakes seem to use the same
den site, marking and recapture studies have shown that some snakes use alternate dens. It
is believed that snakes home to den sites using scent trails.
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