- Tacazze Sunbird
- Taiga Bean Goose
- Taiga Flycatcher
- Talamanca Hummingbird
- Tambourine Dove
- Tawny-capped Euphonia
- Tawny-flanked Prinia
- Tawny Antpitta
- Tawny Eagle
- Tawny Owl
- Tawny Pipit
- Temminck's Courser
- Temminck's Lark
- Temminck's Stint
- Tennessee Warbler
- Terek Sandpiper
- Thekla's Lark
- Thick-billed Euphonia
- Thick-billed Green Pigeon
- Thick-billed Lark
- Thick-billed Raven
- Thick-billed Seed Finch
- Thick-billed Weaver
- Three-banded Plover
- Thrush Nightingale
- Tibetan Sand Plover
- Tiger Shrike
- Titicaca Grebe
- Tooth-billed Tanager
- Torrent Duck
- Torrent Tyrannulet
- Tourmaline Sunangel
- Tree Pipit
- Tricolored Heron
- Trilling Cisticola
- Tristram's Starling
- Tropical Boubou
- Tropical Kingbird
- Tropical Mockingbird
- Tropical Parula
- Trumpeter Finch
- Tufted Duck
- Turkey Vulture
- Turquoise-browed Motmot
- Turquoise-fronted Amazon
- Twite
- Two-barred Crossbill
- Tyrian Metaltail