Rather stocky, all-dark ibis of wetlands and lakes in high Andes; also wanders to coastal lowlands, where can be locally numerous. Usually in small groups. Feeds by probing with its downcurved bill. Breeding adult has dark chestnut head and neck, and red face. Nonbreeding and immature have whitish streaking on head and neck, and duller face. In flight, feet project only a short distance beyond tail tip. Compare with more slender and long-legged White-faced Ibis, but no range overlap.