- Tacazze Sunbird
- Taiga Bean Goose
- Taita Fiscal
- Tamarugo Conebill
- Tanzanian Red-billed Hornbill
- Taveta Weaver
- Tawny-bellied Babbler
- Tawny-flanked Prinia
- Tawny-headed Swallow
- Tawny Eagle
- Tawny Frogmouth
- Tawny Owl
- Tawny Pipit
- Temminck's Courser
- Temminck's Stint
- Terrestrial Brownbul
- Thamnornis
- Thekla's Lark
- Thick-billed Flowerpecker
- Thick-billed Murre
- Thick-billed Raven
- Thick-billed Siskin
- Thick-billed Weaver
- Thorn-tailed Rayadito
- Three-banded Courser
- Three-banded Plover
- Thrush-like Wren
- Tibetan Sand Plover
- Tickell's Blue Flycatcher
- Tit Hylia
- Toco Toucan
- Torrent Duck
- Tree Pipit
- Tricolored Heron
- Tricolored Munia
- Tropical Boubou
- Tropical Kingbird
- Tropical Mockingbird
- Trumpeter Finch
- Trumpeter Hornbill
- Trumpeter Swan
- Tufted Duck
- Tufted Tit-Tyrant
- Tundra Swan
- Turkey Vulture
- Turner's Eremomela
- Turquoise-fronted Amazon
- Two-barred Crossbill