Bearded Screech-Owl (Megascops barbarus), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.besowl.01 retrieved March 9, 2022 1 2 3 4 5 Weidensaul, Scott (2015).