| direct-children | documentation | graph |
| WarmBloodedVertebrate | 88 | Vertebrates whose body temperature is internally regulated. | ^ |
| Bird | 12 | A Vertebrate having a constant body temperature and characterized by the presence of feathers. | ^ |
| Poultry | 6 | | ^ |
| Owl | . | A nocturnal bird of prey with a large head and forward-facing eyes. | ^ |
| Pigeon | . | A subclass of Bird with a stout body and short legs. | ^ |
| Vulture | . | A diurnal bird of prey with a bald head that feeds on carrion. | ^ |
| Parrot | . | Parrots, also known as psittacines are birds of the roughly 393 species in 92 genera that make up t... | ^ |
| QuailBird | . | | ^ |
