For citations:

Oparina A.M., Oparina O.S. Current status of the world population of the Great bustard (Otis tarda tarda) (Otididae, Aves) within its range. Povolzhskiy Journal of Ecology. 2025;(2):165-182. (In Russ.) https://doi.org/10.35885/1684-7318-2025-2-165-182