The yellow-knobbed curassow (Crax daubentoni) – also known as Daubenton's Curassow – is found in forest and woodland in Colombia and Venezuela. It is named after the the fleshy yellow knob at the base of its bill and the French naturalist Louis-Jean-Marie Daubenton (1716 – 1800). It has a striking crest, made of feathers that curl forward. Females lack the fleshy yellow knob, but otherwise resemble the male in the plumage, being overall black with a white crissum.