Principe Thrush

A small long-tailed bird found in gallery forests near water, mostly foraging in the understory. Rusty above and pale below with a white eyebrow. Similar to Yellow-chinned Spinetail, but has a pale (not black) lower mandible. The song, usually given as a duet, is a series of high-pitched notes.

This enormous heron stands 1.5 meters tall and has a robust, dagger-like bill. The immature has rustier upperwings than the adult. Its flight is ponderous and labored. Goliath Heron inhabits large rivers, marshes, estuaries, and mangroves, hunting for large fish and other animals, stabbing them with an open bill. It has a distinct, barking “kowoork” call that can be heard from up to 2 km away. Purple Heron has similar plumage, but Goliath Heron is twice the size, has a much larger bill, and has a rufous (not blackish) top of the head.

Medium-sized spiderhunter with an olive back and streaked gray underparts. Inhabits lowland and submontane forests and forest edges, where it feeds primarily on nectar in the understory; favors blossoms of banana and ginger. Very similar in appearance to Gray-breasted Spiderhunter; range overlap is poorly understood but appears to be minimal. Look for Bornean’s more intensely streaked underparts and slightly larger size. Long-billed Spiderhunter can show some streaking on the breast but is much larger and longer-billed, with yellowish underparts. Sometimes noisy, giving loud raspy nasal calls.