M. Canova, C. Bedoni, V. Harper, A. M. Barazzoni, A. de Faveri, and A. Grandis, “Anatomical differences in three wing muscles of the Grey heron (Ardea cinerea), the Common buzzard (Buteo buteo) and the Common kestrel (Falco tinnunculus): a possible functional interpretation”, Riv Ital Ornitol, vol. 85, no. 1, pp. 15–22, Dec. 2015.