The species forms a superspecies with a number of related and similar looking island and mainland myzomelas across the Pacific and Australasia.

[2][3] Across its wide distribution, the Micronesian myzomela occupies a range of natural and man-made habitats, from sea level to the highest peaks, although the lack of mountains in Micronesia predominantly makes this a species of the lowlands.

Forests, mangroves, scrubland, secondary scrub, savanna, as well as agricultural, plantation and urban areas, are all used by this species.

The Micronesian myzomela primarily feeds on nectar, but will also take insects and other small invertebrates.

They occur singly and in pairs, while occasionally small groups will gather at good sources of nectar.