The western plantain-eater has a thick bright yellow bill and shows a white wing bar in flight.

The western plantain-eater was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1770 in his Histoire Naturelle des Oiseaux from a specimen collected in Senegal.

[2] The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text.

[3] Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Falco piscator in his catalogue of the Planches Enluminées.

[7] The American ornithologist James L. Peters rejected the identification of Daubenton's plate with the western plantain-eater and instead used the specific epithet africanus that had been proposed by John Latham in 1790: "To recognize Daubenton's plate as representing Phasianus africanus Latham requires more imagination than I am capable of using.