Class · Birds · Animalia › Chordata › Aves · NCERT Chapter 4: Animal Kingdom
Feathers, a beak, and forelimbs turned into wings; hollow pneumatic bones; four-chambered heart; warm-blooded.
| CorvusCrow | Aves |
| ColumbaPigeon | Aves |
| PsittaculaParrot | Aves |
| StruthioOstrich | AvesFlightless. |
| PavoPeacock | Aves |
| AptenodytesPenguin | Aves |
| NeophronVulture | Aves |