Bridled white-eye

The bridled white-eye (Zosterops conspicillatus) (Chamorro name: nosa') is a species of white-eye native to the Mariana Islands. The species' natural habitat is subtropical or tropical moist lowland forests.[2]

Bridled white-eye
A wild Saipan white-eye, Z. conspicillatus saypani
Endangered  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Zosteropidae
Genus:	Zosterops
Species:	Z. conspicillatus
Binomial name
Zosterops conspicillatus (Kittlitz, 1832)
Synonyms
Dicaeum conspicillatum

The nominate subspecies Zosterops conspicillatus conspicillatus, endemic to the island of Guam, became extinct due to the introduction of the brown tree snake. The last known sighting was in 1983.[2][3]

The remaining subspecies, Z. conspicillatus saypani, endemic to the Northern Mariana Islands, on the islands of Tinian, Saipan and Aguijan,[1] is separated as a full species by some authorities. Until recently, this population was extremely abundant across its native range. 2007-2008 surveys estimated a population of 620,000-940,000, with approximately 534,000 birds on Saipan alone. In 2010, this species was the second most abundant breeding landbird encountered by surveyors on Saipan. The potential introduction of the brown tree snake on Saipan and U.S. military activity on Tinian are expected to result in rapid population declines on these islands, which constitutes over 50% of this bird's range.[1][4] A survey into the impacts these have had on the wild populations has not yet been conducted, but as a precautionary measure the species has been classified as endangered.[1] The Saipan white-eye has a captive breeding program based at the Sedgwick County Zoo and National Aviary.

Formerly, the Rota white-eye was also considered as a subspecies of the bridled white-eye.