Figure 48 from The Descent of Man, and Selection in Relation to Sex by Charles Darwin

Source: https://commons.wikimedia.org/wiki/File:Descent_of_Man_fig48.jpg

The tufted coquette (Lophornis ornatus) is a tiny hummingbird that breeds in eastern Venezuela, Trinidad, Guiana, and northern Brazil. It is an uncommon but widespread species, and appears to be a local or seasonal migrant, although its movements are not well understood.