Tiny and active sunbird of forest edges, parks, and gardens; the most common urban sunbird throughout most of its range. Both sexes have a plain olive back, a yellow belly, and white tail edges that are flared out in flight. The male flashes an iridescent blue throat while the female has a yellow throat and eyebrow. Female Plain-throated Sunbird also has a yellow belly, but it is larger with a thicker bill and lacks the Olive-backed’s white tail patches. Only sunbird species in Australia.