References

Birdlife International. 2000. Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife.

Kear, J (ed) 2005. Ducks, Geese and Swans. Oxford: Oxford University Press

Kear, J (1972). The Blue Duck of New Zealand. Living Bird, 11. pp. 175–192.

Kear, J and Burton, PJK (1971). The Food and Feeding Apparatus of the Blue Duck Hymenolaimus. Ibis, 113. pp. 483–493.

Kear, J and Steel, TH (1971). Aspects of Social Behaviour in the Blue Duck. Notornis, 18. pp. 187–198.

Madge, S and Burn, H (1988). Wildfowl: An identification guide to the ducks geese and swans of the world. London: Christopher Helm.

Young, D (2006). Whio: Saving New Zealand’s Blue Duck. Nelson: Craig Potton Publishing

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