Bare-faced Go-away-bird
Crinifer personatus
The sexes are similar, other than the female's green beak. It is 48 cm (19 in) long beak to tail, and weighs approximately 210 to 300 grams. Its call is a double or repetitive kow-kow.
ID text from Wikipedia, CC BY-SA 4.0
White-bellied Go-away-bird
Crinifer leucogaster
This species averages 51 cm (20") in length. Its long, pointed grey and black tail with a white median band is characteristic of the species. It has a white under-wing patch, visible in flight. The adult has a grey head and leading to a dark grey to blackish pointed crest with an approximate length of 6 cm. The belly and under-tail coverts are white, giving the bird the first part of its name "white-bellied". The bill is black in male, pea-green in the female (becoming yellowish during the breeding season).
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Bare-faced Go-away-bird and White-bellied Go-away-bird.