The species inhabits dry rocky lowlands with scattered trees, bushes and Opuntia cacti (Baptista et al. 2020). It feeds mainly on seeds, but during the wet season it also feeds on caterpillars and cacti blossoms. Active nests usually containing two eggs have been found during most months, and the breeding season may vary between islands; the nest may be on the ground, in rock cavities, or in old nests of Galápagos Mockingbird Mimus parvulus.

This taxon is endemic to the Galápagos islands, Ecuador, where two subspecies are recognised. The race exsul is known from Culpepper and Wenman, while the nominate galapagoensis occurs on all the other major islands. It is rare on some islands but common on others, appearing to be fairly secure away from settled areas and on islands free of predators.

Conservation Actions Underway
The species occurs within the Galápagos National Park.

Conservation Actions Proposed
Monitor the population trend. Control and remove invasive predators.