Maranon Tyrannulet

The Maranon tyrannulet or Marañon tyrannulet (Nesotriccus maranonicus) 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 Maranon 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 Maranon 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 Maranon tyrannulet. The International Ornithological Committee (IOC) and the Clements taxonomy treat it as a monotypic species. However, HBW treats the taxon as a subspecies of the Tumbesian tyrannulet (N. tumbezanus). == Description == The Maranon tyrannulet is about 12 cm (4.7 in) long. The sexes have the same plumage. Adults have a brownish gray head with an indistinct whitish supercilium. Their upperparts…