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Conservation biology

Science, sex and the kakapo

Sex-allocation theory predicts how the sex ratio of offspring should vary with the mother's physical condition. Applying this theory has helped in retrieving a charismatic parrot from the edge of extinction.

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Figure 1: The eccentric kakapo.



  1. *International Ornithological Congress, Beijing, China, 11–17 August 2002.


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Correspondence to William J. Sutherland.

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Sutherland, W. Science, sex and the kakapo. Nature 419, 265–266 (2002).

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