A person with red hair.
A North American duck (Aythya americana) highly esteemed as a game bird.
A kind of milkweed (Asclepia curassavica), with red flowers, formerly used in medicine.
Chinese red-headed centipede
Red-headed bunting (Emberiza bruniceps)
Red-headed titi (Callicebus regulus)
Red-headed vulture (Sarcogyps calvus)
Red-headed woodpecker (Melanerpes erythrocephalus)