1. Averin, V. H. 1941. About events to enrichment of beet fields by useful wild birds (in the order of setting the question). Notes of Kharkiv Agricultural Institute. Anniversary edition, 267-288. [In Russian.]
2. BirdLife International. 2017. Corvus frugilegus. The IUCN Red List of threatened species: 2017.
3. BirdLife International. 2023. Species factsheet: Corvus frugilegus. Downloaded from http://www.birdlife.orh om 04/05/2023
4. Bokotey, A. A. 2011. Nesting of the rook Corvus frugilegus L. in the city of Lviv and main reasons of changing his quantity. Scientific Bulletin of UNFO, 21(4), 114-122. [In Ukrainian.]
5. Bokotey, A. A., Dzyubenko, N. V., Gorban, I. M., Kuchynska, I. V., Bashta, A.-T. V., Pohranychny, V. O., Bushko, V. V., Senyk, M. A. 2010. Breeding avifauna of the Upper Dnister basin. Lviv. 1-400. [In Ukrainian.]