The Cuckoo as a nest parasite of the Lesser Grey Shrike. - N.N. Balatsky, S.D. Kustanovich. - Berkut. 6 (1-2). 1997. P. 103-104.
Several ecological races of the Cuckoo parasitize on different species of shrikes. About the Lesser Grey Shrike as a host species is known very few. In Poltava region of Ukraine a nest of this bird with cuckoo's egg was found 7.06.1965. Process of egg laying was observed. This egg was some lesser and did not distinguish on the exterior from eggs of the shrikes. [Russian].
Key words: Cuckoo, Lesser Grey Shrike, nest parasite, host species, egg.