- A bird of paradise, the male of which has mainly velvety-black plumage and a display call that sounds like a whistling bullet.
More example sentences
- Genus Ptiloris, family Paradisaeidae: three species
- The rifle bird was once very common but the clearing of rainforest has destroyed much of its habitat and so it is scarce in many areas.
More definitions of rifle birdDefinition of rifle bird in:
- The US English dictionary