Black-headed Heron

The largest nuthatch in the world, about the size of a bulbul. Coloration similar to many other nuthatches: gray above and white below, with a thick black line through the eye. Picky in its habitat preferences and as a result generally uncommon or absent through much of its range; requires extensive stands of mature tall pines in foothills and montane regions. Can be quite loud, giving a hoarse chatter reminiscent of a corvid; also gives a clipped fluty whistle.

Large chunky, olive-green greenbul. The crown is gray, and there is a white arc above the eye, and a dark cheek with fine white stripes, though these can be hard to see. Found in humid foothill and montane forest. The song is a chatty, up-and-down series of low “chowp” notes and higher nasal notes. Similar to Black-browed Mountain Greenbul, but has cheek striping, and greenish rather than grayish underparts.

Tiny warbler with a long bill and frequently cocked tail. Secretive, tending to stick to the brushy underlayer of hill and submontane forest. Often moves about solitarily, but can sometimes be found with mixed-species flocks, especially with small warblers and fulvettas. Green above and yellow below, with a pale gray throat. Somewhat resembles a Common or Dark-necked tailorbird, but only a fraction of the size, with a proportionally far longer bill, black eye-stripe, and bright orange forehead. Song is an extremely high-pitched tinkling series of whistled notes with an otherworldly quality. Calls include high descending trills and dry chittering.