Kucherenko, Volodymyr. “The Selective Consumption of European Ivy (Hedera Helix) Berries by the Common Blackbird (Turdus Merula)”. 2024. Ornis Fennica, vol. 101, no. 4, Dec. 2024, pp. 131-7, https://doi.org/10.51812/of.148001.