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  Roman А.М., Franchuk M.V., Bokotey А.А., Dzyubenko N.V. Fish as diet component of Black Stork (Сiconia nigra) in places of its regular feeding // Proc. of the State Nat. Hist. Mus. - Lviv, 2018. - P.99-110. DOI: https://doi.org/10.36885/nzdpm.2018.34.99-110 Key words: Ciconia nigra, fish, diet, West Polissia, Rivne Nature Reserve Fish species composition and state of fish populations in places of Black Stork regular feeding on the territory of Rivne Nature Reserve were studied. In total, 13 localities were studied and 8 species of fish belonging to 5 families were found (Scardinius erythrophthalmus, Leucaspius delineates, Gobio gobio, Cyprinus carpio, Misgurnus fossilis, Esox lucius, Perca fluviatilis, Perccottus glenii). The most common among them are Weatherfish and Northern Pike (found at 50% of locations). Also, European Perch and Chinese Sleeper (detected at 30% of locations). Hydrological conditions of water bodies in places of Black Stork foraging are very unstable because of big water level fluctuations, and because of periodical drying out in summer and total freezing in winter. The mentioned reasons cause changes of hydrochemical parameters and, therefore, fluctuations in fish species richness and numbers. Only the most insensitive species can survive – Weatherfish and Chinese Sleeper.
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