Kakapo low. Supplementary feeding affects the sex ratio of kakapo offspring, and can be used to increase the number of female chicks by deliberately manipulating maternal condition. During the winter of 1981, only females lighter than were given supplementary feeding to avoid raising their body condition, and the sex ratio results in 1982 were close to parity, eliminating the male-biased sex ratios in the unrestricted feeding. Today commercial parrot food is supplied to all individuals of breeding age on Whenua Hou and Anchor. The amount eaten and individual weights are carefully monitored to ensure that optimum body condition is maintained. Kakapo
Kakapo the habitable range for kakapo. Although the kakapo was extinct in many parts of the islands by the time Europeans arrived, including the Tararua and Aorangi Ranges, it was locally abundant in parts of New Zealand, such as the central North Island and forested parts of the South Island. Although kakapo numbers were reduced by Māori settlement, they rapidly declined after European colonisation. Beginning in the 1840s, Pākehā settlers cleared vast tracts of land for farming and grazing, further reducing kakapo habitat. They brought more dogs and other mammalian predators, including domestic cats, black rats and stoats. Europeans knew little