- Taiga Bean Goose
- Taiwan Barbet
- Taiwan Blue Magpie
- Taiwan Whistling Thrush
- Tanimbar Starling
- Tasmanian Nativehen
- Tawny-bellied Babbler
- Tawny-breasted Honeyeater
- Tawny-breasted Wren-Babbler
- Tawny-tufted Toucanet
- Tawny Frogmouth
- Tawny Owl
- Tawny Pipit
- Temminck's Stint
- Temminck's Tragopan
- Terek Sandpiper
- Thick-billed Berrypecker
- Thick-billed Ground Pigeon
- Thick-billed Murre
- Thrush Nightingale
- Tibetan Lark
- Tibetan Partridge
- Tibetan Sandgrouse
- Tibetan Snowcock
- Tickell's Thrush
- Toco Toucan
- Tooth-billed Hummingbird
- Tooth-billed Pigeon
- Torrent-lark
- Tree Pipit
- Tristram's Starling
- Tropical Scrubwren
- Trumpeter Finch
- Tufted Duck
- Tufted Titmouse
- Tundra Swan
- Turkestan Ground Jay
- Turquoise Parrot
- Twite
- Two-barred Crossbill