The Kakariki are basically bright green in colour but as with most green coloured birds, some very beautiful colour varieties are produced. The red-crowned Kakariki is distinguished by a bright crimson forehead, crown and a streak through the eye with violet-blue on the wings while the yellow-crowned has a golden yellow crown. Sometimes specimens have been found where the green gives way to a bright canary yellow while the bright red and violet remain. There have been other specimens taken which are bright red or predominately blue.
The three species of kākāriki, or New Zealand parakeets, are the most common species of parakeets in the genus Cyanoramphus, family Psittaculidae. The birds' Māori name, which is the most commonly used, means "small parrot". The etymology is: from kākā, parrot + riki, small.