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Kakapo, like all birds, reproduce sexually. They must first attract a mate. The male does this by producing a subsonic mating boom with his inflatable thoracic air sac, which can be heard several kilometres away. Females are attracted by the call, and as they approach, they are drawn to the male's exact location by a higher pitched "ching" call. The males gather in groups to compete for female attention in what is called a 'lek' mating system. Males have their own 'calling posts', which are specially dug-out bowls in the earth where they perform to impress the females. When the females arrive, they wander among the males engaging in their courtship displays and producing their calls before deciding upon a suitable mate.

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11y ago

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