All are specialist fish-eaters with prominent stiff crests on their heads.

When the aardwolf is alarmed, hairs on its back rise, creating a prominent crest.

A pretty little bird, the waxwing has very bright feathers and a prominent crest.

However, corellas are smaller, lack the prominent yellow crest and have pale bills.

The body is dark grey and the thorax has a prominent crest.

Its characteristics include a robust build with a prominent sagittal crest.

They were mounted for the most part upon hills and prominent crests around the threatened centres of population.

Ivory-bills have a prominent crest, although in juveniles it is ragged.

They are distinguished from other members of their large family by a prominent crest on their head.

A prominent crest is a feature of the bazas.