Moorea Reed-warbler

The Moorea Reed-warbler (<em>Acrocephalus longirostris</em>) is a member of the family Acrocephalidae and holds the critically endangered status of Critically Endangered according to the IUCN, placing it among the most threatened birds in the world. Detailed plumage and behavioral descriptions of this species are limited in the available literature. The species is confined to the island of Moorea in French Polynesia, one of the Society Islands of the South Pacific, where it is associated with forest habitats. Its extremely restricted range on a single island makes it exceptionally vulnerable to deforestation, invasive species such as rats and mongoose, introduced avian diseases, and cyclones. Diet, nesting biology, clutch size, and song are not documented in available records, reflecting the scarcity of detailed ornithological study of this critically imperiled bird. Conservation efforts focused on habitat protection, invasive species control, and potentially captive breeding may be essential for the survival of this species. Its Critically Endangered designation signals an urgent need for targeted conservation intervention.