BeC – Bern Convention

BoC – Bonn Convention

BD – Bird Directive

HD – C Habitats Directive: Council Directive on the conservation of natural habitats of wild fauna and flora (92/43 EEC)

CS – European Conservation Status

RDB – Red Data Book

BDA – Biodiversity Act

IUCN – International Union for Conservation of Nature and Natural Resources

CITES – Convention on International Trade in Endangered Species of Wild Fauna and Flora

EX – extinct

CR – critically endangered

EN – endangered

VU – vulnerable

IZ – Institute of zoology, Bulgarian Academy of Sciences

NMNH – National Museum of National History, Bulgarian Academy of Sciences

MOEW – Ministry of Environment and Water of Bulgaria

MAF – Ministry of Agriculture and Forests of Bulgaria

BSPB – Bulgarian Society for the Protection of Birds

SPEC – Species of European Conservation Concern

NeP – Nature Park

NP – National Park

PA – Protected Area

PT – Protected Territory