Ciereszko, A., Kowalczyk, A., Lukaszewicz, E., Krzywinski, A., Kobus, A. and Dietrich, G. J. (2009) “Sperm characteristics of male hybrid from a cross between male Black Grouse Tetrao tetrix and female Capercaillie T. urogallus”, Ornis Fennica, 86(4), pp. 149–152. Available at: https://ornisfennica.journal.fi/article/view/133736 (Accessed: 24November2024).