List of Terms | Taxonomic Terms | |
arboreal theory tereestrial theory Eocene Miocene Pliocene pterylae apteria calamus rachis vane barb barbule contour feather down feather powder down bristle filoplume aspect ratio wing loading camber angle of attack stalling angle pectoralis major supracoracoideus foramen triosseum dynamic soaring static soaring air sac parabronchial lung crop gizzardybr> proventriculus urate ansiodactylus zygodactylus | Ambiortus Enaliornis |