Yap White-eye
Zosterops oleagineus
Handsome and unique white-eye, endemic to the island of Yap, in Micronesia’s western Caroline Islands. Dark olive-brown in color, with a flashing bright white eye-ring and orange legs and feet. Inhabits a range of wooded habitats on Yap, from remaining native rainforest to mangroves and forest edge. Averages less common than the Plain White-eye with which it shares the island, and tends to forage in smaller groups, or in pairs. Gives a somewhat bulbul-like series of whistled notes: “wi’di-deer-di-deer.”
Identification
Yap white-eye can refer to either of the two species of white-eye found on Yap. Yap olive white-eye (Zosterops oleagineus) Plain white-eye (Zosterops hypolais)
Taxonomy
It is often placed in the genus Rukia with the teardrop and long-billed white-eyes and is most similar in plumage to the former.
- Scientific name
- Zosterops oleagineus
- Authority
- Hartlaub & Finsch, 1872
- Order
- Passeriformes
- Family
- Zosteropidae
- Genus
- Zosterops
Range and habitat
It is endemic to the Micronesian island of Yap. Its natural habitats are tropical moist lowland and mangrove forests. It is threatened by habitat loss.
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Other Birds

Kittlitz's Murrelet
Brachyramphus brevirostris
Small, oblong-shaped seabird. Breeding plumage mottled brown; darkness varies, but often shows golden tint. Nonbreeding plumage dark gray above and white below, with a white face and large white wing patch. Nests in crevices in rocky scree slopes, particularly around glaciers; forages in coastal glacial outflows. Similar to Marbled and Long-billed Murrelets, but with shorter bill and white outer tail feathers; breeding birds average paler with speckled back, while nonbreeders show white on face extending above the eye.

Spangled Kookaburra
Dacelo tyro
A large kingfisher of Savanna and monsoon forest. Very thick bicolored bill, spotted head, pale underparts, dark wing with pale blue patch, pale blue rump and darker blue tail. Freezes in position for long periods, occasionally lifting its tail slowly, then flicking it quickly down. Hunts insect prey on the ground. Similar to Blue-winged Kookaburra, but Spangled Kookaburra is smaller with a spotted rather than streaked head and lacks white outer tail feathers.Often duets, with a rhythmic, repeated “gok-gok!” interspersed with a rattling trill.

African Pygmy-Goose
Nettapus auritus
Colorful miniature waterfowl that is smaller than most ducks. Both sexes have rufous underparts, a dark back, white on the face, and white on the wing in flight. Males have a green patch on the back of the head and a yellow bill; females have a black-and-white head and a dark bill. Found in freshwater wetlands with floating vegetation, especially water lilies. Shy and inconspicuous, as it generally avoids open water. Voice is a high-pitched squeaking. Small size and bold and colorful plumage separate it from other waterfowl.
Start Your Bird Watching Journey
Identify a bird outdoors and keep the field guide close for your next observation.