[1] Slovak Acad Sci, Inst Virol, Bubravska Cesta 9, Bratislava 84505, Slovakia
[2] State Nat Conservancy Slovak Republ, Dlha 3, Prievidza 97101, Slovakia
[3] Raptor Protect Slovakia, Kuklovska 5, Bratislava 84104, Slovakia
[4] Natl Pk Slovak Karst, Hamossyho 188, Brzotin 04951, Slovakia
[5] Slovak Acad Sci, Inst Zool, Dubravska Cesta 9, Bratislava 84506, Slovakia