Krams, I. A., Krams, T. and Cernihovics, J. (2001) “Selection of foraging sites in mixed Willow and Crested Tit Flocks: rank-dependent survival strategies”, Ornis Fennica, 78(1), pp. 1–11. Available at: https://ornisfennica.journal.fi/article/view/133542 (Accessed: 12May2024).