The mainland drill (Mandrillus leucophaeus leucophaeus) is a subspecies of the endangered drill. It is distinguished by ringed yellow and black coloring on its crown, and is otherwise similar to the Bioko drill.
The mainland drill (Mandrillus leucophaeus leucophaeus) is a subspecies of the endangered drill. It is distinguished by ringed yellow and black coloring on its crown, and is otherwise similar to the Bioko drill.
