trilling gnatwren, long-billed gnatwren (Ramphocaenus melanurus)

Ramphocaenus melanurus is a species in the Ramphocaenus genus. It is commonly known as trilling gnatwren, long-billed gnatwren This name is unplaced name for the species in the family Polioptilidae . . This species is found in southeast Mexico south to Ecuador and Amazonia..