Five of the planned 10 aluminum nest boxes were mounted in the end of May 2012 as part of the conservation activities of the LIFE+ project “Conservation of Falco Cherrug in NE Bulgaria, Romania, Hungary and Slovakia”. The nest boxes are set on places especially chosen on the basis of different criteria, such as previous Saker observations, good food resources, minimum of threats, less visitors, etc. They are made of aluminum and are of the “Hungarian” type, which has proved to be very successful in the Carpathian basin, where thanks to the conservation efforts of our colleagues the species population continues to expand.