Olivaceous Greenlet
Hylophilus olivaceus
A small, vociferous vireo of east Andean cloud forest. Yellow underparts and crown, pale eye, and pinkish bill help separate it from other species in range. Usually stays high in the trees and sometimes follows mixed-species flocks. Sings frequently, belting out a squeaky and sometimes monotonous series of notes such as “twee-twee-twee…” or “soowe-soowe-soowe …”
Taxonomy
- Scientific name
- Hylophilus olivaceus
- Authority
- Tschudi, 1844
- Order
- Passeriformes
- Family
- Vireonidae
- Genus
- Hylophilus
Range and habitat
- Migration
- Resident species
Conservation
- Population trend
- stable
Photos
Distribution
Bird Calls
Other Birds

Delicate Prinia
Prinia lepida
Tiny, disproportionately long-tailed, active, and vocal. The upperparts are gray-brown with heavy dark streaking, the underparts are pale, and each tail feather shows both pale and dark tips. Generally found in rather moist habitats within arid zones, including field margins, riparian woodland, scrub, gardens, and wetlands; can be quite numerous. Very vocal, especially in spring. The song is a rattling series of dry chirps, subtly different from the slower-paced song of Graceful Prinia. Males often sing from obvious perches. Visually extremely similar to Graceful Prinia, but there is little overlap in range. In any areas of overlap, best separated by song, but Delicate is also slightly longer- and narrower-tailed and browner.

White-throated Ground Dove
Pampusana xanthonura
This dove is accurately but misleadingly-named, for the male’s whole upper body is white, not just his throat; he also has a wine-red patch on the back and upperwing. Female is dirt-brown with darker back and wings. Inhabits the Northern Mariana Islands and Yap, in the Caroline Islands. Found in both pristine and degraded forest, often near habitated areas. Forages primarily on the ground on Yap and in trees and bushes on the Marianas. Coos are deep and sonorous.

Chatham Islands Shag
Leucocarbo onslowi
Fairly large black-and-white shag with pink feet and orange facial skin that becomes purple during the breeding season. Adults have a striking appearance, with a black head and a clean white chin, neck, and belly. The white patches on the upperwing and back are visible both at rest and in flight. Juveniles are dark brown above, with wing and dorsal patches pale brown rather than white. Usually feeds alone, but breeds and roosts in colonies on exposed rocky headlands. Confined to the Chatham Islands, so cannot be confused with other black-and-white shags.
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