The Probert Encyclopaedia of Nature

PARROT

Parrot refers to any bird of the order Psittaciformes, abundant in the tropics, especially in Australia and South America. They are mainly vegetarian, and range in size from the 8.5cm pygmy parrot to the 100cm Amazon parrot. The smaller species are commonly referred to as parakeets. The plumage is often very colourful, and the call is usually a harsh screech.
Parrots all have hooked bills and feet adapted for tree climbing.
Research Parrot