James Bruce,
Select Specimens of Natural History Collected in Travels to Discover the Source of the Nile…
“ Its thighs are covered with feathers of the same colour as the belly, which reach more than half way down his leg; his legs and feet are black, marked distinctly with scales. He has two toes before and one behind, each of which have a sharp and crooked claw. I never saw his nest; but in flying, and while sitting, he perfectly resembles the cuckoo. I never heard, nor could I learn from any others, that he had any voice or song. He makes a sharp, snapping noise, as often as he catches the bees, which is plainly from closing his beak. ”
