Black-headed Honeyeaters form monogamous, long-term pairs, with some help from other adults. They nest communally in small loose colonies. Both sexes build the deep, cup-shaped nest in a high well-hidden location among foliage, usually suspended by the lip from horizontal branches. The nest is formed from bark, with some grass or twigs, bound with spider-web and lined with feathers, fur, wool and fluffy seeds or thistle-down. Both sexes incubate the eggs, with the female often being fed by the male while on the nest, and feed the young, often with the help of other adults and young birds from the previous year's brood. Nests may be parasitised by Pallid Cuckoos,Fan-tailed Cuckoos, and Horsfield's Bronze-Cuckoos.