Tumbes sparrow 
Tumbes swallow 
Tumbes tyrannulet 
Tumbes tyrant 
Turquoise jay 
Turquoise tanager 
Twelve-wired bird-of-paradise 
Twite 
Tylas vanga 
Tyrannine woodcreeper 
Uniform Antshrike 
Uniform treehunter 
Unstreaked tit-tyrant 
Upland antshrike 
Utcubamba tapaculo 
Van Dams vanga 
Van Hasselt's sunbird 
Variable antshrike 
Variable oriole 
Variable seedeater 
Variable sunbird 
Variable wheatear 
Varied sittella 
Varied thrush