First data of foraging, feeding, and food items of Aphrastura masafuerae from Alejandro Selkirk Island, Chile are presented. Brood-caring Másafuera Rayaditos 1) forage mostly inside dense vegetation below the protective cover, 2) leave the vegetation only for a short duration to fl y from the nest site to the foraging destination and to stop on a rock before entering the nest hole to control surroundings, 3) minimize energetic costs by foraging mainly hill-parallel, 4) use a 3 – 4 ha home range by visiting distance zone in different frequency, 5) transport nestling faeces off the nest hole but do not hide them from predators, and 6) feed their nestlings with arthropod prey, mainly small butterfl y larvae, in which there are nice-differentiated from sympatric Másafuera Cinclodes. More detailed studies on the breeding ecology and foraging are needed implement management plans and avoid extinction of this badly known island endemic.

Habitat use pattern, nesting ecology, brood care, ovenbirds, island endemics, biodiversity conservation, home range structure, Aphrastura masafuerae, Cinclodes oustaleti baeckstroemii, Alejandro Selkirk, Juan Fernández Islands.