Birds, butterflies, dragonflies, lizards... all find refuge on the Mazure site. They are often very shy and difficult to observe. The European nightjar, for example, is a migratory bird with a "dead leaf" colour plumage, and it nests on the ground. The marsh fritillary is a brown, orange and pale yellow butterfly that lays its eggs only on the small scabious plant. The sand lizard is insectivorous and lives in colonies in burrows. The black darter is a dragonfly characteristic of bogs.