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Wildlife Conservation in France
Couleuvre verte et Jaune
~~ Coluber viridiflavus
( syn.
Française Zamenis)
(various English names)
Green/Yellow snake – Dark
green snake – Western whip snake
The
Couleuvre verte
et jaune is present in the southern
two-thirds of France and is difficult to confuse with any other
snake in this country. As its name implies it is predominantly
dark green with yellow dashes or bands which are transversal on the
main part of its body and are longitudinal towards the tail,
although as can be seen in the photos various forms exist depending on the stage of development. Being up to 2 metres it can be a large snake,
prominent eyes with round pupils.

Photo. Juvenile Western whip snake with pale coloration
It
occupies all types of habitat with a preference for dry, quiet areas
– open woodlands and land which is left to scrub or fallow,
sometimes to be found near rivers or other wet areas. It is an
extraordinary hunter; its prey varies with local availability and it
will take small mammals, small birds, frogs,
lizards etc. It has also been known to eat adders and even
its own species.

Photo. A Western whip snake, about 1.75 metres long, in a tree .France
The
couleuvre verte
et jaune is above all else a powerful
snake, though normally discreet it can be obstinate and aggressive,
thrashing the ground with its tail and hissing when angered,
sometimes tilting its head back and then striking and biting
with force, it is this force which gives it the
ability to overcome its victims but is of no serious concern to humans. It is also an agile climber weaving
its way with speed through bushes and hedgerows.
..jpg)
Photo. Juvenile western whip snake. France.(Lesley Hanmore).
Hibernation takes place
from October until April using spaces in the ground, low cavities in
trees, stone walls etc.
Coupling takes place in
May and can result in violent fights between males for a female,
this can also occur between the sexes. During copulation the
partners roll and twist themselves around each other, keeping their
heads raised upright, photos below . Between 5 and 20 eggs are deposited under
stones, old tree stumps or in rotting vegetation in June/July, the
young hatching 6 to 8 weeks later.
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Photos above: Western whip snakes coupling,
France (Jenny McGowan)
Population: in decline.
NOT VENOMOUS
Larger Couleuvre verte et jaune should be
handled with caution! If you do not know how to handle snakes,
gently use a long stick or something similar if you need to move
one, left alone they will soon move away. Any strike will not be
harmful.
More photos below.

Photo. Western
whip snake. P. Williams

Photo. Western
whip snake, hatchling. R.Meek

Photo. Western
whip snake, juvenile. R.Meek

Photo. Western
whip snake, preparation to strike. R.Meek

Photo. Western
whip snake, preparation to strike. R.Meek

Photo.Close up of a Western whip snake's head .France
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Photo.Western whip snakes coupling,
France (Jenny McGowan)

Photo. Western whip snakes breeding. France, Janet Desforges.
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