Guillaume et Bogdan,  deux naturalistes en herbe,découvrent un jeune orvet le long du canal,près d'une souche.

Ils le ramènent au laboratoire de biologie pour le photographier avant de lui laisser retrouver sa liberté ....au jardin sauvage.

....."In juvenile slow worms, the back is iridescent silver, gold, bronze or copper and the sides are brown or black "

http://www.arkive.org/species/ARK/reptiles/Anguis_fragilis/more_info.html

"Before they mature at about 3 years old, young slow worms have a central stripe running down their backs. Once they reach adulthood, however, females tend to keep this marking, but males do not. Aside from this notable physical difference, there are several other ways to determine if we are looking at a male or a female slow worm. For example, if the animal in question has blue spots on its body, a broad head, or a belly in mottled black or dark gray, it is mostly likely a "he."

http://edhelper.com/AnimalReadingComprehension_160_1.html