Monitoring of fauna is a part of biological monitoring and has an irreplaceable role in the process of environmental impact assessment in sense of Act of the Slovak National Council No. 24/2006. In its sense, in the area of the Industrial park for Automobile Production Záhorie, the investors (Car-industrial park Ltd. Lozorno and Investor Department of General Management of the Slovak Railways) have carried out the monitoring of selected animal groups and siding. Butterflies (Lepidoptera) and birds (Aves) were selected as model groups. The result of a five years monitoring on the study area proved, that the composition of animal communities was poor, mainly in the group of rare species and species with high mobility. Less mobile species moved to the neighbouring biotopes, more mobile ones moved to more distant areas.