Fecha de publicación: 18/06/2013 Fuente: WIPO "pollination" A nest for solitary bees may be fashioned from a rectangular solid of either a solid matrix or a number of nest elements. Each side of the nest contains a multiplicity of apertures, where each aperture provides a nesting cavity for the bees. Each aperture has an open end and a closed end. If fashioned from individual nest elements, the orientation of the apertures may be adjusted as desired, such that each element may be stacked upon an adjacent element in one of four orientations, so that the cavities of one element may be at 0°, 90°, 180° or 270° relative to an adjacent element. If desired, the aperture density of each side may be adjusted as desired. The configuration of the nesting cavities of the present invention reduces congestion at nest entrances and provides shelter to the bees from predators and the environment.