WHITTAKER, ANDREW, Museu Paraense Emílio Goeldi, Caixa Postal 399, Belém, Pará, Brazil

• Zootaxa Vol. 2305 No. 1: 7 Dec. 2009 - Articles
  Species limits in antbirds (Aves: Passeriformes: Thamnophilidae): an evaluation of Frederickena unduligera (Undulated Antshrike) based on vocalizations
  Abstract