The Oʻahu ʻalauahio ( Paroreomyza maculata), also known as the Oʻahu creeper, is a small finch-like Hawaiian honeycreeper that is endemic to the island of Oahu. It is Critically endangered.
Shortly after the last visual observation, a large portion of habitat in the North Halawa Valley, where most of the bird's most recent confirmed sightings were made, was destroyed for Interstate H-3, with U.S. Senator Daniel Inouye adding a Rider bill to exempt the freeway from environmental laws such as the Endangered Species Act, which would have otherwise protected the bird's habitat but blocked highway construction. The construction is thought to have led to a very rapid decline in the bird's already-small population, which is likely why no well-supported reports have been made since 1985, although unconfirmed reports are still filed and not all potential habitat has been surveyed. Part of the doubt and uncertainty surrounding recent observations of this species is its similarity to the Oʻahu ʻamakihi ( Chlorodrepanis flava), which may be the last remaining endemic honeycreeper of Oʻahu if the ʻalauahio is extinct. The IUCN Red List estimates that less than 50, and likely only about 1–7 individuals, remain if the species is still extant.
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