Strix chacoensis
The Chaco Owl (*Strix chacoensis*) is a medium-sized, cryptically plumaged owl endemic to the Gran Chaco region of South America. Measuring 33-38 cm in length with an average weight of 350-400 grams, it boasts pale gray-brown upperparts finely vermiculated with darker markings, and whitish underparts heavily streaked with dark brown, providing exceptional camouflage against tree bark. A key identification mark is its distinct facial disc, rimmed with a fine dark line, framing striking yellow ...
Inhabits arid and semi-arid Chaco forests, dry deciduous woodlands, and thorny scrub, often near watercourses or in gallery forests, typically at low elevations (below 700m).
Primarily preys on small mammals, particularly rodents, but also consumes small birds, large insects (like beetles and grasshoppers), and occasionally reptiles.
Strictly nocturnal, the Chaco Owl spends its days roosting motionless in dense foliage, often pressed close to a tree trunk, relying entirely on its cryptic plumage for concealment. Its primary foraging strategy is the classic 'perch-and-pounce,' where it waits patiently on an elevated branch bef...
The Chaco Owl is a resident species found exclusively within the Gran Chaco region of South America. Its breeding and year-round range encompasses southeastern Bolivia, western Paraguay, northern Argentina, and extends into the extreme southwestern part of Brazil (specifically in Mato Grosso do S...
Least Concern
- The Chaco Owl gets its name from the Gran Chaco, a vast, dry natural region of South America where it is endemic. - Unlike many owls in the *Strix* genus that have dark eyes, the Chaco Owl possesses striking yellow eyes, a distinctive field mark. - Its intricate pale gray-brown plumage provides...