These are species which have spectacularly plumaged males. They are brightly plumaged and have enormous, contrastingly patterned bills. The adult augur buzzard is strikingly plumaged and essentially unmistakable if seen well. The adult crowned eagle is quite strikingly plumaged. The males are brightly plumaged, usually in greens and yellows. Males and females are similarly plumaged, though males average slightly larger than females. The sexes are similarly plumaged, and young birds are a duller version of the adult. Sexes are similarly plumaged, though females and youngsters have duller heads and paler underparts.