To understand associations between habitat. individual behaviour. and population development of solitary bees we developed an individual-based model. This model is based on field observations of <i>Osmia rufa</i> (L) (Apoideae: Megachilidae) and describes population dynamics of solitary bees. https://www.bekindtopets.com/top-price-Gemplers-4-mil-Disposable-Nitrile-Gloves-Bucket-of-1000-Gloves-p8887-huge-savings/