This bird shelter is made of a single spruce board. It is worked using the technique of the tavillon (wooden tiles). Risou spruce is one of the few woods that can be split and offer a regular surface. Once split, a part of the board is bent with steam to create the shelter. This technique was once widely used in the Vallée de Joux, but has now almost disappeared. The municipal employees of Le Chenit in the Vallée de Joux occasionally make tavillons. This birdhouse is made in collaboration with these craftsmen and aims to maintain the know- how of split wood.