Aves | Mammals |
1. Adapted to Ariel habitat | 1. Adapted to a variety of habitats like aquatic, terrestrial, arboreal etc |
2. Exoskeleton made of feathers | 2. Exoskeleton of skin and fur/hair. |
3. Ear pinna and mammary glands absent. | 3. Ear pinna and mammary glands present. |
4. Oviparous Example- peacock, parakeet rtc | 4. viviparous Example, man. horse, monkey etc |