14 authors.
Hristo PeshevFund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria.ORCID 0000-0001-8925-053X Atanas GrozdanovDepartment of Zoology and anthropology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8 Dragan Tsankov Blvd, zootribe@gmail.com, Sofia, Bulgaria Department of Zoology and anthropology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8 Dragan Tsankov Blvd, zootribe@gmail.com Sofia Bulgaria.ORCID 0000-0002-3360-2468 Elena Kmetova-BiroAustrian Ornithological Central, Vienna, Austria Austrian Ornithological Central Vienna Austria.
Ivelin IvanovGreen Balkans - 9 Stara Planina Str., www.greenbalkans.org, officesz@greenbalkans.org, Stara Zagora, Bulgaria Green Balkans - 9 Stara Planina Str., www.greenbalkans.org, officesz@greenbalkans.org Stara Zagora Bulgaria.
Rigas TsiakirisMinistry of Environment and Energy, Forestry Service of Ioannina, Ioaninna, Greece Ministry of Environment and Energy, Forestry Service of Ioannina Ioaninna Greece.ORCID 0000-0003-1297-3750 Simeon MarinGreen Balkans - 9 Stara Planina Str., www.greenbalkans.org, officesz@greenbalkans.org, Stara Zagora, Bulgaria Green Balkans - 9 Stara Planina Str., www.greenbalkans.org, officesz@greenbalkans.org Stara Zagora Bulgaria.
Saša MarinkovićDepartment of Ecology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060, Belgrade, Serbia Department of Ecology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade Serbia.
Goran SušićOrnithological Station Rijeka, Croatian Academy of Sciences and Arts, Rijeka, Croatia Ornithological Station Rijeka, Croatian Academy of Sciences and Arts Rijeka Croatia.
Emanuel LisichanetsNature Conservation Association - AQUILA, Kavadarci, Republic of North Macedonia Nature Conservation Association - AQUILA Kavadarci Republic of North Macedonia.
Irena HribšekNatural History Museum of Belgrade, Njegoseva 51, Belgrade, Serbia Birds of Prey Protection Foundation, Bulevar despota Stefana 142, Belgrade, Serbia Natural History Museum of Belgrade, Njegoseva 51, Belgrade, Serbia Birds of Prey Protection Foundation, Bulevar despota Stefana 142 Belgrade Serbia.
Zoran KarićBirds of Prey Protection Foundation, Bulevar despota Stefana 142, Belgrade, Serbia Birds of Prey Protection Foundation, Bulevar despota Stefana 142 Belgrade Serbia.
Sven KapeljAssociation BIOM, Zagreb, Croatia Association BIOM Zagreb Croatia.
Lachezar BonchevFund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria.
Emilian StoynovFund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org, Blagoevgrad, Bulgaria Fund for Wild Flora and Fauna, 49 Ivan Mikhaylov Str., office 327, P.O.Box 78, www.fwff.org, pirin@fwff.org Blagoevgrad Bulgaria.ORCID 0000-0002-5201-8996 No grant is acknowledged in the PubMed record.