The undulated antshrike (Frederickena unduliger) is a relatively large species of antbird from the western Amazon in south-eastern Peru, western Brazil, and possibly far south-eastern Colombia. It formerly included the fulvous antshrike, which is found further west, as a subspecies.
The undulated antshrike was described by the Austrian ornithologist August von Pelzeln in 1868 and given the binomial name Thamnophilus unduliger.[2]
The undulated antshrike (Frederickena unduliger) is a relatively large species of antbird from the western Amazon in south-eastern Peru, western Brazil, and possibly far south-eastern Colombia. It formerly included the fulvous antshrike, which is found further west, as a subspecies.
The undulated antshrike was described by the Austrian ornithologist August von Pelzeln in 1868 and given the binomial name Thamnophilus unduliger.
