Francisco Piedrahita:
Lechuza Vizcachera, Mochuelo Terrero, Burrowing Owl (Athene cunicularia) (Athene cunicularia partridgei)
Francisco Piedrahita:
Mochuelo Terrero, Burrowing Owl (Athene cunicularia)
Francisco Piedrahita:
Buhito Peruano, Peruvian Pygmy-Owl (Glaucidium peruanum)
Francisco Piedrahita:
Buhito Peruano, Peruvian Pygmy-Owl (Glaucidium peruanum)
Francisco Piedrahita:
Buhito Peruano, Peruvian Pygmy-Owl (Glaucidium peruanum)
Francisco Piedrahita:
Buho Orejudo, Stygian Owl (Asio stygius)
Francisco Piedrahita:
Buho Orejudo, Stygian Owl (Asio stygius)