Motta-Junior, J. C. “Ferruginous Pygmy-Owl (Glaucidium Brasilianum) Predation on a Mobbing Fork-Tailed Flycatcher (Tyrannus Savana) in South-East Brazil”. Biota Neotropica, vol. 7, no. 2, Jan. 2007, //www.biotaneotropica.org.br/BN/article/view/314.