The Ferruginous Pygmy-owl (Glaucidium brasilianum) is a small owl that breeds in south-central Arizona in the USA, south through toMexico, Central America and South America to Bolivia and Argentina. Trinidad, as well as other localities, have endemic subspecies of this owl. Recent genetics work has found substantial differences in Ferruginous Pygmy-owls from different regions, and members of the northernridgwayi group are sometimes considered a separate species, the Ridgeway's Pygmy-owl (Glaucidium ridgwayi).This species is a part of the larger grouping of owls known as typical owls, Strigidae, the family that contains most species of owl. The other grouping is the barn owls, Tytonidae. In the southern portion of its range, the Ferruginous Pygmy-owl is generally a common bird found in a wide range of semi-open wooded habitats.