- Timor Stubtail
- Tinian Monarch
- Tinkling Cisticola
- Tiny Cisticola
- Tiny Greenbul
- Tiny Hawk
- Tiny Sunbird
- Tiny Tyrant-Manakin
- Tiree
- Tirimbina Rainforest Center
- Tiritiri Matangi Island
- Tiroler Achen Nature Reserve
- Tishlovit and Kefar Baruch Reservoirs
- Tissamaharama
- Tit-Hylia
- Tit-like Dacnis
- Tit Berrypecker
- Titchfield Haven
- Titchwell Marsh
- Titicaca Grebe
- Tittesworth Reservoir
- Tlaxcala
- Tobishima
- Toco Toucan
- Tocuyo Sparrow
- Todd's Antwren
- Todd's Nightjar
- Todd's Sirystes
- Tody Motmot
- Togian Boobook
- Togian White-eye
- Togo Paradise Whydah
- Tokyo Area
- Tolima Blossomcrown
- Tolima Dove
- Tomtit
- Tongan Megapode
- Tongan Whistler
- Tongo Hills
- Tono Dam
- Tooth-billed Bowerbird
- Tooth-billed Hummingbird
- Tooth-billed Pigeon
- Tooth-billed Wren
- Tophill Low Nature Reserve
- Topknot Pigeon
- Topography
- Topography Artwork Beaks
- Topography Artwork General Anatomy
- Topography Artwork Heads
- Topography Artwork Legs and Feet
- Topography Artwork Tails
- Topography Artwork Wings
- Topography Artwork Wings 2
- Toro Olive Greenbul
- Torotoroka Scops Owl
- Torrent-lark
- Torrent Duck
- Torrent Flycatcher
- Torrent Tyrannulet
- Torres del Paine
- Torresian Crow
- Torresian Imperial Pigeon
- Torresian Kingfisher
- Tory Island
- Toucan Barbet
- Tourmaline Sunangel
- Townsend's Shearwater
- Townsend's Solitaire
- Townsend's Storm Petrel
- Townsend's Warbler
- Tracker III
- Tractrac Chat
- Traeth Lavan (Lavan Sands)
- Traill's Flycatcher
- Transpantaneira Road
- Transvolcanic Jay
- Travelite EX (Prostaff ATB) 8X25
- Trebonsko Protected Landscape Area
- Tree Martin
- Tree Pipit
- Tree Planting Road (eastern saddle, above Hilo, Hawai'i)
- Tree Swallow
- Tregaron Bog (Cors Tregaron or Cors Caron)
- Tremiti Islands
- Trichoglossus haematodus
- Tricolored Blackbird
- Tricolored Brushfinch
- Tricolored Heron
- Tricolored Munia
- Tricolored Parrotfinch
- Triglav National Park
- Trigradski Gorge
- Trilling Cisticola
- Trilling Shrike-Babbler
- Trilling Tailorbird
- Trilling Tapaculo
- Trindade Petrel
- Trinidad Euphonia
- Trinidad Motmot
- Trinidad Piping Guan
- Tristan Moorhen
- Tristan Thrush
- Tristram's Bunting
- Tristram's Starling
- Tristram's Storm Petrel
- Tristram's Warbler
- Trocaz Pigeon
- Trochilus
- Trogon
- Trondheim
- Troodos Mountains
- Tropeiro Seedeater
- Tropical Boubou
- Tropical Gnatcatcher
- Tropical Kingbird
- Tropical Mockingbird
- Tropical Parula
- Tropical Pewee
- Tropical Screech Owl
- Tropical Scrubwren
- Tropical Shearwater
- Troupial
- Truk Monarch
- Truk White-eye
- Trumland
- Trumpet Manucode
- Trumpeter Finch
- Trumpeter Hornbill
- Trumpeter Swan
- Trunvel Nature Reserve
- Tryggelev Nor
- Tsai Yuan Jiu Yuan Wetland
- Tsavo Sunbird
- Tschudi's Nightjar
- Tschudi's Tapaculo
- Tsingy Wood Rail
- Tuamotu Kingfisher
- Tuamotu Reed Warbler
- Tuamotu Sandpiper
- Tucker Wildlife Sanctuary
- Tucson
- Tucuman Mountain Finch
- Tucuman Parrot
- Tudeley Woods
- Tufted Antshrike
- Tufted Coquette
- Tufted Duck
- Tufted Flycatcher
- Tufted Jay
- Tufted Puffin
- Tufted Tit-Spinetail
- Tufted Tit-Tyrant
- Tufted Titmouse
- Tui
- Tui Parakeet
- Tullberg's Woodpecker
- Tumbes Hummingbird
- Tumbes Sparrow
- Tumbes Swallow
- Tumbes Tyrant
- Tundra Bean Goose
- Tundra Swan
- Tunis
- Turati's Boubou
- Turkestan Ground Jay
- Turkey
- Turkey Vulture
- Turnbull National Wildlife Refuge
- Turner's Eremomela
- Turquoise-browed Motmot
- Turquoise-fronted Parrot
- Turquoise-throated Barbet
- Turquoise-throated Puffleg
- Turquoise Cotinga
- Turquoise Dacnis
- Turquoise Flycatcher
- Turquoise Jay
- Turquoise Parrot
- Turquoise Tanager
- Turtur
- Tuscan Archipelago
- Tuxtla Quail-Dove
- Twelve-wired Bird-of-Paradise
- Twite
- Two-banded Plover
- Two-banded Warbler
- Two-barred Warbler
- Two Peoples Bay
- Tylas Vanga
- Tyrannine Woodcreeper
- Tyresta National Park
- Tyrian Metaltail
- Tytler's Leaf Warbler
- Tywi Estuary including Taf and Gwendraeth Estuaries
- U.S. Virgin Islands
- Ua Pou Monarch
- Udawatta Kele
- Udzungwa Forest Partridge
- Uganda Woodland Warbler
- Ula-ai-hawane
- Ultramarine Flycatcher
- Ultramarine Grosbeak
- Ultramarine Kingfisher
- Ultramarine Lorikeet
- Ultravid 10x42
- Ultravid 8x20 BL
- Ulubat Golu (Lake Apolyont)
- Uludag National Park
- Uluguru Bushshrike
- Uluguru Violet-backed Sunbird
- Ulva Island
- Unadorned Flycatcher
- Undulated Antpitta
- Undulated Antshrike
- Undulated Tinamou
- Unicolored Antwren
- Unicolored Blackbird
- Unicolored Jay
- Unicolored Tapaculo
- Unicolored Thrush
- Uniform Antshrike
- Uniform Crake
- Uniform Finch
- Uniform Swiftlet
- Uniform Treehunter
- Unspotted Saw-whet Owl
- Unst
- Unstreaked Tit-Tyrant
- Unteres Odertal Nationalpark River Oder (Brandenburg)
- Upcher's Warbler
- Upland Antshrike
- Upland Buzzard
- Upland Goose
- Upland Pipit
- Upland Sandpiper
- Upper Derwent Valley
- Upper Newport Bay Ecological Reserve
- Upper Rio Napo
- Upper Vistula River Valley
- Upton Warren
- Ural Owl
- Urich's Tyrannulet
- Urim
- Urrao Antpitta
- Ursula's Sunbird
- Usambara Akalat
- Usambara Eagle-Owl
- Usambara Hyliota
- Usambara Thrush
- Usambara Weaver
- Ussher's Flycatcher
- Utsira
- Uttoxeter Quarry
- Uvea
- Vadehavet Bird Sanctuary
- Vadnais-Snail Lakes Regional Park
- Vadvetjakko National Park
- Valia Kalda National Park
- Vallee de la Restonica
- Valli di Comacchio and surrounding area
- Vampire Ground Finch
- Van Dam's Vanga
- Van Hasselt's Sunbird
- Vanikoro Flycatcher
- Vanikoro Monarch
- Vanikoro White-eye
- Vanoise National Park
- Vansda National Park
- Vanuatu Honeyeater
- Vanuatu Imperial Pigeon
- Vanuatu Kingfisher
- Vanuatu Megapode
- Vanuatu Petrel
- Vanuatu Whistler
- Varanger Peninsula and Fjord
- Varghello Valley
- Variable Antshrike
- Variable Chachalaca
- Variable Dwarf Kingfisher
- Variable Goshawk
- Variable Hawk
- Variable Oriole
- Variable Oystercatcher
- Variable Pitohui
- Variable Seedeater
- Variable Sunbird
- Variable Wheatear
- Varied Bunting
- Varied Honeyeater
- Varied Lorikeet
- Varied Sittella
- Varied Solitaire
- Varied Thrush
- Varied Tit
- Varied Triller
- Variegated Antpitta
- Variegated Bristle Tyrant
- Variegated Fairywren
- Variegated Flycatcher
- Variegated Laughingthrush
- Variegated Tinamou
- Varzea Piculet
- Varzea Schiffornis
- Varzea Thrush
- Vaurie's Nightjar
- Vaux's Swift
- Vedanthangal
- Veery
- Vegetarian Finch
- Velavadar National Park
- Veluwezoom National Park
- Velvet-browed Brilliant
- Velvet-fronted Euphonia
- Velvet-fronted Grackle
- Velvet-fronted Nuthatch
- Velvet-mantled Drongo
- Velvet-purple Coronet
- Velvet Asity
- Velvet Scoter
- Velvety Black Tyrant
- Venezuelan Bristle Tyrant
- Venezuelan Flowerpiercer
- Venezuelan Flycatcher
- Venezuelan Sylph
- Venezuelan Troupial
- Venezuelan Tyrannulet
- Venezuelan Wood Quail
- Venice Lagoon (Laguna di Venezia)
- Venus Pool
- Veraguan Mango
- Verdecocha Private Reserve
- Verdin
- Verditer Flycatcher
- Vermiculated Fishing Owl
- Vermiculated Screech Owl
- Vermilion Cardinal
- Vermilion Flycatcher
- Vermilion Tanager
- Vernal Hanging Parrot
- Verreaux's Batis
- Verreaux's Coua
- Verreaux's Eagle
- Verreaux's Eagle-Owl
- Verreaux's Monal-Partridge


