The Cockatiel (Nymphicus hollandicus), also known as the Quarrion and the Weiro, is the smallest and genuinely miniature cockatoo endemic to Australia. They are prized as a household pet throughout the world and are relatively easy to breed. As a caged bird Cockatiels are second only in popularity to the Budgerigar.

The only member of the genus Nymphicus, the Cockatiel has previously been considered a crested parrot or small cockatoo. However, more recent molecular studies have settled the debate. These indicate that the Cockatiel belongs in the Cockatoo Subfamily Calyptorhynchinae (commonly known as Dark Cockatoos). They are hence now classified as the smallest of the Cacatuidae (Cockatoo family). Cockatiels are natively found across the outback regions of inland Australia, and favour the Australian wetlands, scrublands, and bush lands.

Lovebird is the commonly used name for any of the nine species of the genus Agapornis (Greek: a??p? agape 'love'; ????? ornis 'bird'). They are a social and affectionate small parrot. Eight species are native to the African continent; the Grey-headed Lovebird is native to Madagascar.

The name Lovebird stems from these parrots' strong, monogamous pair bonding and the long periods of time in which paired birds will spend sat beside one another.

Lovebirds live in small flocks and eat mainly fruit, vegetables, some grasses and seed. Abyssinian Lovebirds also eat insects and figs, and the Black-collared Lovebirds have a special dietary requirement for native figs making them almost impossible to keep in captivity.

A Parakeet is a North American term for any one of a large number of unrelated small to medium sized parrot species, that generally have long-tail feathers. The term is descriptive, but does not imply an actual relationship between the different parakeets.

The Common Pet Parakeet is more correctly called the Budgerigar or budgie and comes from Australia. They are common and popular pets throughout the world. It is imprecise to call these birds parakeets because there are many different species of parakeets.The term Grass Parakeet or Grasskeet refers to a large number of small Australian parakeets native to grasslands such as Neophema and Princess Parrot. The Australian Rosellas are also parakeets.

The term Ringneck Parakeet refers to a number of African and Asian parakeet species of the Psittacula genus. The Alexandrine parakeet, is one of the largest parrots commonly referred as a parakeet.