The eye of a passeriform bird, the European Starling (Sturnus vulgaris)
A tendon in the leg automatically tightens when the bird perches, locking the toes around the branch. passeriform bird
Passerines are considered the most highly evolved avian group, having undergone a massive evolutionary radiation during the Paleogene period. Researchers from Nature note that they originated in the Southern Hemisphere (Gondwana) before spreading to every continent except Antarctica. Classification: Oscines vs. Suboscines The eye of a passeriform bird, the European
They range from tiny 7.5 cm (3-inch) flycatchers to the large common raven, which can reach nearly 120 cm (46 inches) in length. Evolutionary Success The eye of a passeriform bird