Sunda Blue Flycatcher

This large, black, and extraordinarily loud bird vanished from Hawaiian forests in 2002. Fortunately it survived in aviaries, and captive bred birds began to be released back into the wild in 2016 in remote parts of the Big Island; early signs are promising with several pairs attempting to nest. Known to Native Hawaiians as ʻAlalā, it is the only crow or crow-like bird currently found on the archipelago. It is much bigger than the crows found on the US mainland, and is closer in size to a raven. Gives a variety of loud caws, croaks, and squeals.

Small flycatcher, extremely similar to several other species. Generally shy and inconspicuous; breeds in spruce forests often near boggy areas. Migrants tend to be found in denser wet areas within woods. Olive-greenish above with distinctive yellow wash on throat and belly. Black wings with bold white wingbars. Nearly identical to Western Flycatchers, but limited range overlap. Within range, main confusion species is Least Flycatcher. Bright yellow throat and belly is usually enough to identify Yellow-bellied Flycatcher, but some worn birds can be very similar. Song is similar to Least Flycatcher ("chebek") but more slurred, with a soft buzzy tone. Not frequently repeated like Least Flycatcher. Soft whistled call note, "pwee," unlike Least's sharp "whit" call.

A loud, fluorescent green bird of tropical evergreen forests, usually found in small and medium-sized flocks. Adult is vivid green with a black mask, bright cinnamon flight feathers, and a cherry-red bill. Southern populations in Southeast Asia have a yellow breast and belly; Chinese birds have completely green underparts. Despite bright colors, can be difficult to see in the canopy; most easily seen as it sails through gaps in the foliage. Vocalizations incorporate ringing whistles, rasping notes, screeches, and noisy chattering.