White-browed gnatcatcher
The white-browed gnatcatcher is a species of bird in the gnatcatcher family Polioptilidae. It is native to central and South America.
This species was formerly considered a subspecies of the tropical gnatcatcher.
Taxonomy
The white-browed gnatcatcher was formally described in 1850 by the French naturalist Charles Lucien Bonaparte and given the binomial name Sylvia bilineata. Bonaparte specified the locality as Cartagena, a city on the Caribbean coast of Colombia. This species was formerly considered as a subspecies of the tropical gnatcatcher. The white-browed gnatcatcher was split from the tropical gnatcatcher based on morphology and phylogenetic data.Five subspecies are recognised:Polioptila bilineata brodkorbi Parkes, 1979 – south Mexico to north Costa RicaPolioptila bilineata superciliaris Lawrence, 1861 – north-central Costa Rica to north ColombiaPolioptila bilineata cinericia Wetmore, 1957 – Coiba Polioptila bilineata bilineata – northwest Colombia to northwest PeruPolioptila bilineata daguae Chapman, 1915 – west-central Colombia