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Nest boxes were used to study the nesting cycle of rifleman (Acanthisitta chloris) in second-growth bush near Dunedin city. During three nesting seasons, two to five territories were studied. It was found that the incubation period was 20–21 days; the nestling period was about 24 days; there was an interval of about 48 hours between successive eggs of a clutch; and clutches known to be complete varied from 2–4 eggs.