Always unmistakable. Distinct, foldable, fan-like crest. Rounded, rectangular wings and long curved bill. Buff body, black wings and tail with conspicuous white barring. Catches the eye when flying by in undulating, butterfly-like motion.

Song a characteristic, hollow, far-reaching and trisyllabic "hoop-hoop-hoop". Dove-like timbre and slightly ascending in pitch. Sometimes two or four syllables, depending on virility of male. Other calls include a dry, hoarse and rasping "ehrrrrrr".

Song:

Wikipedia: map (se also Xeno-canto below)

Birdlife ecology

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase