Recent breeding records of Saker Falcons (Falco cherrug) in Bulgaria
Arkumarev, Volen, Klisurov, Ivaylo, Demerdzhiev, Dimitar, Petrov, Rusko, Stamenov, Anton, Andonova, Yana, Gradinarov, Dimitar, Dixon, Andrew
First-time use of metal construction for mounting artificial nests on trees for Saker Falcons (Falco cherrug) in Bulgaria
Petrov, Rusko, Costain, Rosie, Andonova, Yana, Klisurov, Ivaylo