On 5th March 2012 a field team of BSPB/BirdLife Bulgaria recorded a Saker Falcon (Falco cherrug) in the vicinity of an aluminum nest box of the ‘Hungarian’ model, proved as the most successful type, installed in 2010. The bird was observed flying and perching on the ground, hunting in different parts of the area around the nest box. The falcon had a full throat, indicating a recent successful attack. Flocks of different birds which could be its potential prey, were observed in the area. „One of the numerous criteria, which BSPB applies to select a site for installing an artificial nest box is the abundance of food. Obviously the site in question has been properly selected”, said Dr. Petar Iankov, one of the experts of the international Life+ Project “Conservation of the Saker Falcon in North-Eastern Bulgaria, Hungary, Romania and Slovakia” (LIFE09NAT-HU-000384).