The Tooth-billed Bowerbird (Scenopoeetes dentirostris) is only found in a tiny part of Australia, namely dense rainforests in Far North Queensland.
This Bowerbird is unusual in that it the male doesn't have the stunning plumage of the other species. It also does not build the elaborate bower to impress the female. Instead, he has a 'court' which is a simple cleared area in the forest decorated with a few leaves.
Both sexes are this dull brown colour with a streaky front. I think the visible gape on this bird indicates that it is a juvenile. They are named for the extension on the bill (the tooth) which has a notch in it in order to cut through leaves. They are difficult to find, even harder to photograph!
Below is a video of a bird calling from above its court.