Nest boxes are processed in, among other things, an aluminum self-supporting gutter, eaves or bargeboards. They are made of high-quality WPC panels and meet the legal standards of the Code of Conduct for Nature-Inclusive Renovation. For each bird species we have an unique nest box with the right dimensions. Because the nest box is integrated into the aluminum self-supporting gutter, for example, no time is lost in selecting and applying for permits. Due to the integration of the nesting site in the gutter, the façade is not subjected to any additional burden.