- Taiga Bean Goose
- Tambourine Dove
- Tawny-bellied Hermit
- Tawny-capped Euphonia
- Tawny-flanked Prinia
- Tawny Antpitta
- Tawny Owl
- Tawny Pipit
- Temminck's Courser
- Temminck's Stint
- Tennessee Warbler
- Terek Sandpiper
- Tessmann's Flycatcher
- Thick-billed Euphonia
- Thick-billed Flowerpecker
- Thick-billed Seed Finch
- Thick-billed Weaver
- Three-banded Plover
- Three-striped Warbler
- Thrush Nightingale
- Tibetan Sand Plover
- Tickell's Blue Flycatcher
- Tit Hylia
- Tocuyo Sparrow
- Torrent Duck
- Torrent Tyrannulet
- Torresian Crow
- Toucan Barbet
- Tourmaline Sunangel
- Townsend's Warbler
- Tree Pipit
- Tricolored Brushfinch
- Tricolored Heron
- Tricolored Munia
- Trilling Gnatwren
- Trocaz Pigeon
- Tropical Gnatcatcher
- Tropical Kingbird
- Tropical Mockingbird
- Tropical Parula
- Tropical Royal Flycatcher (mexicanus)
- Tropical Screech Owl
- Tufted Coquette
- Tufted Duck
- Tufted Tit-Tyrant
- Tufted Titmouse
- Turkey Vulture
- Turquoise-browed Motmot
- Turquoise Jay
- Twelve-wired Bird-of-paradise
- Twite
- Tyrian Metaltail