Question

what is the main feature of aves?

Answer 1

kantoor, down and rom

Answer 2

• class aves are commonly known as birds.
• warm-blooded with an exoskeleton of feathers.
• forelimbs modified for flying.
• epidermal covering of feathers and leg scales.
• presence of beak or bill.
• fully ossified skeleton with air cavities.
• well developed nervous system.
• 4 chambered heart.