What is "machaerirhynchus"

Machaerirhynchus is a genus of passerine birds with affinities to woodswallows and butcherbirds. The two species are known as boatbills. The genus is distributed across New Guinea and northern Queensland.

The species are:

• Black-breasted boatbill, M. nigripectus, found in New Guinea
• Yellow-breasted boatbill, M. flaviventer, found in northeast Australia