Distribution in the Americas
Giant Antpitta inhabits the western slope of Central Andes in Colombia in Cauca and Huila departments, southward to northwestern Ecuador (Cotopaxi, Pichincha). East of the Andes it is found from extreme northeastern Ecuador (Carchi), southward through Napo to the Province of Tungurahua (Hilty and Brown 1986, Fjeldså and Krabbe 1990, Ridgely and Greenfield 2001a, Ridgely and Tudor 2009).
Distribution outside the Americas
Confined to the Americas.
Giant Antpittas inhabit humid and wet primary montane forest, apparently preferring level ground and swampy areas, but also occasionally found on steep slopes (Fjeldså and Krabbe 1990, Krabbe and Schulenberg 2003). Although the species sometimes forages in open pasture next to forest, especially just before dawn and at late dusk or during foggy weather (de Soye et al. 1997, Krabbe and Schulenberg 2003), overall the Giant Antpitta is probably a species of intact montane forests. It has been found at elevations of 1200–3000 m (Chapman 1926, Meyer de Schauensee 1950, de Soye et al. 1997, Ridgely and Tudor 2009).