All species in this genus have a black and white plumage.

They are strikingly patterned with black, white and brown plumage.

The white plumage of immature birds is often mixed with black.

Captive specimens without access to soil have clean white plumage.

Members of this group often have red black, yellow, white and orange plumage.

Both species have a mix of white and black plumage.

In the clear sunlight his body glistened like the white plumage of a sea bird.

Juveniles are mottled brown and have more white plumage than adults.

All of them were very similar, with basic white plumage.

The white plumage of the head and body has fine grey barring.