1.) Akers, K. and Orr-Walker, T. (2009). The Kea: New Zealand’s Endangered Alpine Parrot. Kea Conservation Trust. Waitakere City, New Zealand.

2.)  ARKive Images of Life on Earth: Kea-Nestor notabilis (March, 2011)

3.) Diamond, J. and Bond, A. (1999). Kea Bird of Paradox: The Evolution and Behavior of a New Zealand Parrot. University of California Press, Ltd., Berkeley, CA.

4.) Hitchmough, R., Bull, L. and Cromarty, P. (2005). New Zealand Threat Classification Lists. Department of Conservation. Wellington, New Zealand.

5.)  IUCN Red List of Threatened Species (March, 2011)

6.)  Kea Conservation Trust (March, 2011)

7.) Orr-Walker, T. (2010). Kea (Nestor notabilis) Husbandry Manual.  Auckland, New Zealand.

8.)  Temple, P. (1996). Book of the Kea. Hodder Moa Beckett Publishers Ltd., Auckland, New Zealand.

9.) International Species Information System-ISIS (August, 2011)

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