The inquisitive Rodrigues fody, often seen in pairs or conspicuous, vocal flocks (5) (6), is a largely insectivorous bird that searches for insect prey from ground level up to heights of ten metres off the ground (5). It moves along branches, carefully inspecting the bark for insects (4), extracting prey from crevices or the undersides of leaves and branches, and sometimes hanging upside down as it reaches for its food (5). As well as this insect diet, the Rodrigues fody feeds on spiders, seeds, some fruit, and also nectar (2), which its brush-tipped tongue is highly developed for (7).
Nests of the Rodrigues fody have been found situated high up in trees and are large, domed structures composed of fine grasses and palm fibres, and speckled with cotton pieces and feathers (3) (5). The eggs of this species are pale blue (3).