For citations:

Tabachishin V.G., Yermokhin M.V. Abnormally Early Nesting of Acanthis cannabina (Linnaeus, 1758) (Fringillidae, Aves) in the Latryk River Valley (Saratov Region). Povolzhskiy Journal of Ecology. 2020;(3):367-373. (In Russ.) https://doi.org/10.35885/1684-7318-2020-3-367-373