Acrocephalus longirostris
The Moorea Reed Warbler (Acrocephalus longirostris) is a small, exceedingly rare, and possibly extinct passerine endemic to Moorea, French Polynesia. Measuring approximately 17 cm in length and weighing around 20 grams, it displays dull olive-brown upperparts and paler, yellowish-white underparts, providing excellent camouflage within its dense forest habitat. Its most distinctive field mark, and the inspiration for its scientific name, is its disproportionately long, slender, and slightly de...
Found exclusively in the dense, moist mountainous forests of Moorea, typically at mid to higher elevations (above 200m), favoring native vegetation like *Metrosideros* and areas with dense *Gleichenia* ferns.
Primarily insectivorous, feeding on a variety of small insects and spiders gleaned from foliage and bark within the forest understory, possibly also probing for invertebrates with its long bill.
This elusive warbler is strictly diurnal, typically active and secretive within the dense undergrowth, where it primarily forages by gleaning insects from leaves and twigs. Its territorial behavior, especially during the breeding season, was reportedly marked by persistent and complex singing, al...
The Moorea Reed Warbler is strictly endemic to the island of Moorea in French Polynesia, an island located approximately 17 km west of Tahiti. Historically, it was likely distributed across suitable forested habitats on the island, primarily favoring the dense, moist mountainous forests. Its rang...
Critically Endangered
- The Moorea Reed Warbler is endemic to a single island, Moorea, making it one of the most geographically restricted bird species ever known, highlighting its vulnerability. - Its scientific name, *longirostris*, directly translates to "long-billed," a defining and unusual feature that distinguis...