Cockatiel
- Describes where they live, what they look like, how long they live, and what they eat. Includes interesting facts.
- http://www.zoo.org/factsheets/parrots/cockatiel/cockatiel.html

Rainbow Lorikeet
- Provides general information about the bird, taxonomy, description, diet, and common names.
- http://www.nzbirds.com/birds/rainbowlorikeet.html

Sulphur-crested Cockatoo
- Explains what it looks like, distribution and habitat, food and feeding, and nesting habits.
- http://www.amonline.net.au/factsheets/sulphur_crested_cockatoo.htm

Parrot
- Wikipedia article explains the origins of these birds, the two families that make up the order Parrots, where they are found, and parrots as pets.
- http://en.wikipedia.org/wiki/Parrot