Scytalopus parvirostris (apparently disjunct from Amazonas, Peru south to central Bolivia) is known unequivocally from the Cordillera Vilcabamba (across the Rio Apurimac from the main chain of the Andes, biogeographically closer to Cuzco) in extreme eastern Junin; it may also occur more widely as it is also known from the main chain of the Andes in nearby Ayacucho and Pasco.
parvirostris in central Peru, but in Junin known only in the outlying Cordillera Vilcabamba (Schulenberg et al.
The species was described quite recently (Weske and Terborgh 1981) based on eight specimens from Cordillera Vilcabamba in central Peru (12[degrees] 38' S, 73[degrees] 36' W).
The plumage of the Bolivian specimen housed at the Coleccion Boliviana de Fauna (CBF 03760, male) was compared visually to two paratypes from Cordillera Vilcabamba sent on loan from the American Museum of Natural History (AMNH 824162, 824165; female and male, respectively) and the single specimen from Cordillera Yanachaga (LSUMZ 105658, male); digital photographs were taken for documentation.
Direct comparison with two paratypes from Cordillera Vilcabamba and the single sample from Cordillera Yanachaga revealed all specimens to be similar (Fig.
Tail length is considerably shorter in the Bo livian and Yanachaga specimens (rectrices of both specimens were neither damaged nor in molt) than in the Cordillera Vilcabamba males.
Trees were festooned with a plethora of mosses, bromeliads, orchids, and other epiphytes, and the undergrowth was impenetrably dense, similar to the type locality on Cordillera Vilcabamba.
Its southernmost known locality (Serrania de Callejas) is ~1,000 km southeast of the species' type locality in Peru's Cordillera Vilcabamba and 1,280 km southeast of the northernmost locality in Cordillera Yanachaga.
The global population size of the Cloudforest Screech Owl could exceed 10,000 mature individuals, given its fairly high abundance on Cordillera Vilcabamba (Weske and Terborgh 198 l) and an estimated extent of occurrence of nearly 13,000 [km.