Salient features of class Aves include:1) They are known as birds.2) They are warm-blooded animals with feathers.3) Body is divided into head, neck, trunk, and tail.4) Limbs are paired. Forelimbs usually modified for flying. The foot is with four toes.5) They do not have sweat glands.6) Oil glands are present at the base of the tail.7) Pinna of the ear is rudimentary.8) They have the fully ossified skeleton with air cavities.9) Each jaw covered with a beak.Examples: Doves, pigeons, falcons, ducks, sparrow, flamingo.