can you give a few examples for the third one?
turtles, crocodilians, snakes, amphisbaenians, lizards and tuatara.
Reptile
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. 
what is black-shouldered kite? It is a small raptor found in open habitat throughout Australia. how did it get it's name?? UNANSWERABLE do they face any threat? No what do they predate on? grasshoppers, rats, small reptiles, birds and rabbits.
wiki:25621934
Reptile [SEP] Introduction
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. Because some reptiles are more closely related to birds than they are to other reptiles (e.g., crocodiles are more closely related to birds than they are to lizards), the traditional groups of "reptiles" listed above do not together constitute a monophyletic grouping or clade (consisting of all descendants of a common ancestor). For this reason, many modern scientists prefer to consider the birds part of Reptilia as well, thereby making Reptilia a monophyletic class, including all living diapsids.