This is the Pacific Pygmy Owl, or Glaucidium peruanum, so commonly found in Ecuador and Peru that it’s also referred to interchangeably as the Peruvian Pygmy Owl. What sets it apart from similar species, is that it’s the only pygmy owl found in the lowlands of the west slope of the Andes.
Pygmy-owls (Glaucidium) are very small owls, with a large rounded head, a pair of prominent black marks (false “eye spots”) on the nape, and a relatively long tail. Peruvian Pygmy-Owl is a relatively larges species of Glaucidium. The upperparts usually are brown or gray, but less commonly are rufous; the underparts are white, marked with broad streaks that are the same color as the upperparts. The crown also has fine white streaks. Peruvian Pygmy-Owl overall is very similar to the brown and gray morphs of the Ferruginous Pygmy-Owl (Glaucidium brasilianum).
Size matters via Cornell:
Total length: 15-17 cm (König and Weick 2008), 16-16.5 cm (Ridgely and Greenfield 2001b).
male: 98 mm (n = 1, holotype; König 1991)
female: mean 102.3 mm (range 101-104 mm, n = 3; König 1991)
male: 67.5 mm (n = 1, holotype; König 1991)
female: mean 72.2 mm (range 69-72.5 mm, n = 3; König 1991)
male, mean 60.5 g (range 58-62 g, n = 3; König 1991)
female, 64.5 g (n = 1; König 1991)