Productivity and mortality of mohua (Mohoua ochrocephala)

摘要: Abstract Mohua (Mohoua oehrocephala) breeding and mortality were studied in the Eglinton Valley, Fiordland National Park, New Zealand. on valley floor (380 m a.s.l.) bred from early October until March, though birds at higher altitude elsewhere started later. In low areas, most pairs raised two broods a year, but they seemed to raise only one. Eggs laid daily, incubation began with laying of last egg lasted about 20 days. The nestling period was 23 Clutches contained 1–5 eggs, often three. During three seasons there no significant nest predation by introduced mammals, 1990/91, when stoat (Muslela erminea) numbers high, 67% nests 50% nesting females destroyed stoats. When low, productivity double‐brooded mohua well within ranges recorded for other forest‐dwelling bird species, single‐brooded lower...