Budgerigars also known as common pet parakeet or shell parakeet. nicknamed the budgie.
Description: Wild budgerigars average 18 cm (7 in) long, weigh 30–40 grams (1.1–1.4 oz), and display a light green body colour (abdomen and rumps), while their mantles (back and wing coverts) display pitch-black mantle markings (blackish in fledgelings and immatures) edged in clear yellow undulations. The forehead and face is yellow in adults but with blackish stripes down to the cere (nose) in young individuals until they change into their adult plumage around three to four months of age. They display small, purple cheek patches and a series of three black spots across each side of their throats (called throat spots). The two outermost throat spots are situated at the base of each cheek patch. The tail is cobalt (dark-blue); and outside tail feathers display central yellow flashes. Their wings have greenish-black flight feathers and black coverts with yellow fringes along with central yellow flashes, which only become visible in flight or when the wings are outstretched. Bills are olive grey and legs blueish-grey, with zygodactyl toes. Budgerigars are social animals and require stimulation in the shape of toys and interaction with humans or with other budgerigars. Budgerigars, and especially females, will chew material such as wood. Tame budgerigars can be taught to speak, whistle, and play with humans.