The white-naped honeyeater (Melithreptus lunatus ) is a passerine bird of the honeyeater family Meliphagidae native to eastern Australia. Birds from southwestern Australia have been shown to be a distinct species, Gilbert's honeyeater, and the eastern birds are more closely related to the black-headed honeyeater of Tasmania. One of several similar species of black-headed honeyeaters in the genus Melithreptus, it dwells in dry sclerophyll eucalypt woodland. Its diet consists of nectar from various flowers, and it also feeds on insects.
A mid-sized honeyeater at 13–15 cm (5–6 in) in length, it is olive-green above and white below, with a black head, nape and throat, a red patch over the eye, and a white crescent-shaped patch on the nape. It is thinner than other similar species. Juveniles have brownish crowns and an orange base of the bill. Its call is a mjerp mjerp.
It is found in eucalypt forest and woodlands. Its diet is principally nectar from a variety of flowers, supplemented by insects and various other invertebrates.
White-naped honeyeaters may nest from July to December, breeding once or twice during this time. The nest is a thick-walled bowl of grasses and bits of bark in the fork of a tall tree, usually a eucalypt. Two or three eggs are laid, 18 x 14 mm in size, and shiny, buff-pink, sparsely spotted with red-brown.
