The Sangihe shrike-thrush (Colluricincla sanghirensis) is rated as Critically Endangered by the IUCN. Known only from a single 19th century specimen until rediscovered in 1995, this species may have fewer than 100 individuals left. There has been almost total loss of forest on its small Indonesian island of Sangihe.
The yellowhead (Mohoua ochrocephala) occurs on the North Island of New Zealand. Periodic irruptions of the introduced stoat result in massive losses (50-100%) of eggs, chicks, and adult females. The range is now fragmented through extirpation of local populations. IUCN lists this species as Vulnerable.
The piopio was common on both New Zealand islands in the 1870s, but started a rapid decline in the 1880s. The last sightings were in 1950-60s. Its extinction has been attributed to predation by introduced rats and loss of habitat.
Three species are considered Near Threatened. The red-lored whistler of Australia, Tongan whistler (Pachycephala jacquinoti) of Tonga, and white-bellied pitohui (Pitohui incer-tus) of New Guinea almost meet the criteria for listing as Vulnerable. Contributing factors include loss of habitat, introduced animals, and small known ranges.
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