Hromada M, Kuczynski L, Krištín A, Tryjanowski P. Animals of different phenotype differentially utilise dietary niche- the case of the Great Grey Shrike Lanius excubitor. Ornis Fenn. 2003;80(2):71–78. Accessed March 18, 2026. https://ornisfennica.journal.fi/article/view/133594