grønnpannesolfugl Aethopyga boltoni

A small, localized bird of mid- to high-elevation montane forest on Mindanao. Has a long, curved bill, a gray head, yellow underparts and rump, an olive back and wings, and a white-tipped tail. Male has a narrow pale yellow throat stripe from the bill to the chest bordered with dark gray, a greenish-blue tail, an orange smudge down from the middle of the chest, and a small red patch in front of the shoulder. Female has a pale gray throat. Similar to Gray-hooded Sunbird, but Apo has a yellow rather than a white belly. Voice includes a rapid pulsing series of “chip!” notes and a high-pitched upslurred “chuuuuuit!”