They often forage on the ground, primarily for ants, but also for other insects, worms, grubs and seeds. Fernandina's Flicker breeds between March and June, and during courtship, pairs regularly engage in high-flying chases.
Like all woodpeckers, it is a cavity nester. Recent fieldwork has shown that it prefers to use nest holes started by West Indian Woodpeckers; the Flicker usurps the original owners, finishes off the excavation work, and moves in. The female lays a clutch of three to five white eggs which are incubated for a period of about 18 days. The young fledge after 22 days. But the West Indian Woodpeckers sometimes get their own back and have been observed killing the chicks of Fernandina's Flickers.
A big thank you to Yadiel Veunes Alonso for allowing me to use his fabulous picture.