The Peregrine Falcon and the Wedge-tailed Eagle are two impressive birds. The Peregrine Falcon whose scientific name is Falco Peregrinus, is a bird of prey in the family of Faconidae and the Wedge-tailed Eagle is a powerful raptor belonging to the Accipitridae family, with scientific name is Aquila Audax. When researching these two formidable birds, animal scientists found that although there are a lot of general similarities, there are specific differences between them, such as their appearance, diet, behavior and habitat. Firstly, about the appearance, both the Peregrine Falcon and the Wedge-tailed Eagle have long pointed wings and sharp eyes. However, The Peregrine Falcon has a blue-grey back, black head and yellow eye-ring, its tail is also short, whereas the Wedge-tailed Eagle has a long tail, its legs are feathered and it is mostly dark blackish-brown. Furthermore, the Peregrine Falcon is smaller and lighter than Wedge-tailed Eagle because its average size is 43 cm and weight is 765g, while the Wedge-tailed Eagle’s average size is 96 cm and weight is 4025g. Secondly, the Peregrine Falcon and Wedge-tailed Eagle are both birds of prey, which means that there are many similarities and differences in their diet. The important similarity is that both of them search for birds and small animals for food. But while the Peregrine Falcon hunts its prey such as small or medium birds, bats in mid-air with the speed of up to more than 300 kilometers an hour, the Wedge-tailed Eagle catches both of live and carrion mainly on the ground. Its food consists of many animals, for instances rabbit, koalas, cats, kangaroos, and even lambs. Thirdly, there are both similarities and differences in their behavior. Some similarities in their behavior can be found, for example, both of them want to live and attack their prey in pairs (team working), they also take care of their eggs and young carefully, the mother and father have the same responsibiliti