Tumbesian Tyrannulet

The Tumbesian tyrannulet or Tumbes tyrannulet (Nesotriccus tumbezanus) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Ecuador and Peru. == Taxonomy and systematics == What is now the Tumbesian tyrannulet was previously considered a subspecies of what was then the mouse-colored tyrannulet. The unsplit species bore the binomial Phaeomyias murina. Genetic analysis showed that Phaeomyias was embedded within Nesotriccus and by the principle of priority, beginning in 2018 most taxonomists moved the species to Nesotriccus. However, as of late 2024 BirdLife International's Handbook of the Birds of the World (HBW) retained the species in genus Phaeomyias. Beyond the move to genus Nesotriccus the Tumbesian tyrannulet's taxonomy is unsettled. Based on multiple lines of evidence the mouse-colored tyrannulet was split into several species, one of which is the Tumbesian tyrannulet. The International Ornithological Committee (IOC) and the Clements taxonomy assign it two subspecies, the nominate N. t. tumbezanus (Taczanowski, 1877) and N. t. inflavus (Chapman, 1924). HBW includes a third subspecies, maranonica, which the IOC and Clements treat as a separate species, the Maranon tyrannulet (N. maranonicus). The Tumbesian tyrannulet's English name comes from the Department of Tumbes, Peru, which is…