Overcoming a 'forbidden phenotype': The parrot's head supports, propels, and powers tripedal locomotion
M. W. Young, E. Dickinson, N. D. Flaim, M. C. Granatosky
This study shows that parrots use their beaks as a third limb during tripedal climbing, generating forces comparable to forelimbs in humans and primates.
bioRxiv · Dec 22, 2021Evolutionary Biology