Title: Sravnitelʹnai︠a︡ anatomii︠a︡, strukturnye preobrazovanii︠a︡ i adaptivnai︠a︡ ėvoli︠u︡t︠s︡ii︠a︡ apparata dvunogoĭ lokomot︠s︡ii ptit︠s︡
Subjects: Anatomy, Locomotion, Evolution, Birds