- Trogon, Bar-tailed / Apaloderma vittatum
- Trogon, Black-headed / Trogon melanocephalus
- Trogon, Black-tailed / Trogon melanurus
- Trogon, Amazonian Black-throated / Trogon rufus
- Trogon, Blue-crowned / Trogon curucui
- Trogon, Collared / Trogon collaris
- Trogon, Diard's / Harpactes diardii
- Trogon, Ecuadorian / Trogon mesurus
- Trogon, Gartered / Trogon caligatus
- Trogon, Green-backed / Trogon viridis
- Trogon, Guianan / Trogon violaceus
- Trogon, Masked / Trogon personatus
- Trogon, Narina / Apaloderma narina
- Trogon, Red-headed / Harpactes erythrocephalus
- Trogon, Red-naped / Harpactes kasumba
- Trogon, Scarlet-rumped / Harpactes duvaucelii
- Trogon, Slaty-tailed / Trogon massena
- Trogon, Surucua / Trogon surrucura
- Trogon, White-tailed / Trogon chionurus
- Tropicbird, Red-tailed / Phaethon rubricauda
- Tropicbird, White-tailed / Phaethon lepturus
- Troupial, Orange-backed / Icterus croconotus
- Tuftedcheek, Streaked / Pseudocolaptes boissonneautii
- Turaco, Great Blue / Corythaeola cristata
- Turaco, Hartlaub's / Tauraco hartlaubi
- Turaco, Ross's / Musophaga rossae
- Turaco, Schalow's / Tauraco schalowi
- Turkey, Ocellated / Meleagris ocellata
- Turkey, Wild / Meleagris gallopavo
- Turnstone, Black / Arenaria melanocephala
- Turnstone, Ruddy / Arenaria interpres
- Tyrannulet, Black-capped / Phyllomyias nigrocapillus
- Tyrannulet, Bolivian / Zimmerius bolivianus
- Tyrannulet, Brown-capped / Ornithion brunneicapillus
- Tyrannulet, Golden-faced / Zimmerius chrysops
- Tyrannulet, Gray-capped / Phyllomyias griseocapilla
- Tyrannulet, Mistletoe / Zimmerius parvus
- Tyrannulet, Peruvian, / Zimmerius viridiflavus
- Tyrannulet, Planalto / Phyllomyias fasciatus
- Tyrannulet, Slender-footed / Zimmerius gracilipes
- Tyrannulet, Sooty-headed / Phyllomyias griseiceps
- Tyrannulet, Southern Beardless- / Camptostoma obsoletum
- Tyrannulet, Torrent / Serpophaga cinerea
- Tyrannulet, White-tailed / Mecocerculus poecilocercus
- Tyrannulet, White-throated / Mecocerculus leucophrys
- Tyrannulet, Yellow / Capsiempis flaveola
- Tyrannulet, Yellow-crowned / Tyrannulus elatus
- Tyrant, Agile Tit- / Uromyias agilis
- Tyrant, Black-crested Tit- / Anairetes nigrocristatus
- Tyrant, Blue-billed Black- / Knipolegus cyanirostris
- Tyrant, Bronze-olive Pygmy- / Pseudotriccus pelzelni
- Tyrant, Brown-backed Chat- / Ochthoeca fumicolor
- Tyrant, Chestnut-bellied Chat- / Ochthoeca cinnamomeiventris
- Tyrant, Cattle / Machetornis rixosa
- Tyrant, Crested Black- / Knipolegus lophotes
- Tyrant, Dark-faced Ground- / Muscisaxicola maclovianus
- Tyrant, Drab Water / Ochthornis littoralis
- Tyrant, Eared Pygmy- / Myiornis auricularis
- Tyrant, Fork-tailed Pygmy- / Hemitriccus furcatus
- Tyrant, Fulvous-crowned Scrub- / Euscarthmus meloryphus
- Tyrant, Hangnest Tody- / Hemitriccus nidipendulus
- Tyrant, Jelski's Chat- / Silvicultrix jelskii
- Tyrant, Lesser Wagtail- / Stigmatura napensis
- Tyrant, Little Ground- / Syrtidicola fluviatilis
- Tyrant, Long-tailed / Colonia colonus
- Tyrant, Many-colored Rush / Tachuris rubrigastra
- Tyrant, Masked Water- / Fluvicola nengeta
- Tyrant, Plain-capped Ground- / Muscisaxicola alpinus
- Tyrant, Pied-crested Tit- / Anairetes reguloides
- Tyrant, Pied Water- / Fluvicola pica
- Tyrant, Rufous-naped Ground- / Muscisaxicola rufivertex
- Tyrant, Scale-crested Pygmy- / Lophotriccus pileatus
- Tyrant, Shear-tailed Gray / Muscipipra vetula
- Tyrant, Streamer-tailed / Gubernetes yetapa
- Tyrant, Velvety Black- / Knipolegus nigerrimus
- Tyrant, White-browed Chat- / Ochthoeca leucophrys
- Tyrant, White-headed Marsh / Arundinicola leucocephala
- Tyrant, Yellow-browed / Satrapa icterophrys
- Umbrellabird, Amazonian / Cephalopterus ornatus
- Umbrellabird, Long-wattled / Cephalopterus penduliger
- Veery, / Catharus fuscescens
- Verdin, / Auriparus flaviceps
- Vireo, Blue-headed / Vireo solitarius
- Vireo, Brown-capped / Vireo leucophrys
- Vireo, Cassin’s / Vireo cassinii
- Vireo, Hutton’s / Vireo huttoni
- Vireo, Mangrove / Vireo pallens semiflavus
- Vireo, Philadelphia / Vireo philadelphicus
- Vireo, Red-eyed / Vireo olivaceus
- Vireo, Warbling / Vireo gilvus
- Vireo, White-eyed / Vireo griseus
- Vireo, Yellow-throated / Vireo flavifrons
- Vulture, Black / Coragyps atratus
- Vulture, Greater Yellow-headed / Cathartes melambrotus
- Vulture, Hooded / Necrosyrtes monachus
- Vulture, King / Sarcoramphus papa
- Vulture, Lappet-faced / Torgos tracheliotos
- Vulture, Lesser Yellow-headed / Cathartes burrovianus
- Vulture, Turkey / Cathartes aura
- Vulture, White-backed / Gyps africanus
- Wagtail, African Pied / Motacilla aguimp
- Wagtail, Eastern Yellow / Motacilla tschutschensis
- Wagtail, Forest / Dendronanthus indicus
- Wagtail, Gray / Motacilla cinerea
- Wagtail, Mountain / Motacilla clara
- Wagtail, Western Yellow/ Motacilla flava
- Wagtail, White / Motacilla alba
- Wallcreeper / Tichodroma muraria
- Warbler, Aberrant Bush / Horornis flavolivaceus
- Warbler, Bay-breasted / Setophaga castanea
- Warbler, Black-and-white / Mniotilta varia
- Warbler, Black-cheeked / Basileuterus melanogenys
- Warbler, Black-crested / Myiothlypis nigrocristata
- Warbler, Black-throated Blue / Setophaga caerulescens
- Warbler, Black-throated Gray / Setophaga nigrescens
- Warbler, Black-throated Green / Setophaga virens
- Warbler, Blackburnian / Setophaga fusca
- Warbler, Blackpoll / Setophaga striata
- Warbler, Blue-winged / Vermivora cyanoptera
- Warbler, Buff-bellied / Phyllolais pulchella
- Warbler, Buff-rumped / Myiothlypis fulvicauda
- Warbler, Canada / Cardellina canadensis
- Warbler, Cape May / Setophaga tigrina
- Warbler, Cerulean / Setophaga cerulea
- Warbler, Chestnut-capped / Basileuterus delattrii
- Warbler, Chestnut-sided / Setophaga pensylvanica
- Warbler, Eastern Olivaceous / Iduna pallida
- Warbler, Eastern Subalpine / Curruca cantillans
- Warbler, Golden-crowned / Basileuterus culicivorus
- Warbler, Golden-winged / Vermivora chrysoptera
- Warbler, Grace's / Setophaga graciae
- Warbler, Gray-capped / Eminia lepida
- Warbler, Gray Wren- / Calamonastes simplex
- Warbler, Great Reed / Acrocephalus arundinaceus
- Warbler, Hooded / Setophaga citrina
- Warbler, Icterine / Hippolais icterina
- Warbler, Kentucky / Geothlypis formosa
- Warbler, Kirtland's / Setophaga kirtlandii
- Warbler, Lesser Swamp / Acrocephalus gracilirostris
- Warbler, MacGillivray's / Geothlypis tolmiei
- Warbler, Magnolia / Setophaga magnolia
- Warbler, Miombo Wren- / Calamonastes undosus
- Warbler, Mourning / Geothlypis philadelphia
- Warbler, Moustached Grass- / Melocichla mentalis
- Warbler, Nashville / Leothlypis ruficapilla
- Warbler, Orange-crowned / Leiothlypis celata
- Warbler, Palm / Setophaga palmarum
- Warbler, Pine / Setophaga pinus
- Warbler, Prairie / Setophaga discolor
- Warbler, Prothonotary / Protonotaria citrea
- Warbler, Radde's / Phylloscopus schwarzi
- Warbler, Russet-crowned / Myiothlypis coronata
- Warbler, Sardinian / Curruca melanocephala
- Warbler, Savi's / Locustella luscinioides
- Warbler, Spectacled / Curruca conspicillata
- Warbler, Swainson's / Limnothlypis swainsonii
- Warbler, Tennessee / Leothlypis peregrina
- Warbler, Townsend's / Setophaga townsendi
- Warbler, Two-barred / Phylloscopus plumbeitarsus
- Warbler, Western Bonelli's / Phylloscopus bonelli
- Warbler, Willow / Phylloscopus trochilus
- Warbler, Wilson’s / Cardellina pusilla
- Warbler, Worm-eating / Helmitheros vermivorum
- Warbler, Yellow / Setophaga petechia
- Warbler, Yellow-breasted / Phylloscopus montis
- Warbler, Yellow-browed / Phylloscopus inornatus
- Warbler, Yellow-rumped / Setophaga coronata
- Warbler, Yellow-throated / Setophaga dominica
- Waterhen, White-breasted / Amaurornis phoenicurus
- Waterthrush, Louisiana / Parkesia motacilla
- Waterthrush, Northern / Parkesia noveboracensis
- Wattlebird, Red / Anthochaera carunculata
- Waxbill, Common / Estrilda astrild
- Waxbill, Crimson-rumped / Estrilda rhodopyga
- Waxbill, Yellow-bellied / Coccopygia quartinia
- Waxwing, Cedar / Bombycilla cedrorum
- Weaver, Asian Golden / Ploceus hypoxanthus
- Weaver, Baglafecht / Ploceus baglafecht
- Weaver, Baya / Ploceus philippinus
- Weaver, Black-headed / Ploceus melanocephalus
- Weaver, Brown-capped / Ploceus insignis
- Weaver, Gray-headed Social- / Pseudonigrita arnaudi
- Weaver, Grosbeak / Amblyospiza albifrons
- Weaver, Holub's Golden- / Ploceus xanthops
- Weaver, Lesser Masked- / Ploceus intermedius
- Weaver, Northern Brown-throated / Ploceus castanops
- Weaver, Red-headed / Anaplectes rubriceps
- Weaver, Speckle-fronted / Sporopipes frontalis
- Weaver, Spectacled / Ploceus ocularis
- Weaver, Vieillot's Black / Ploceus nigerrimus
- Weaver, Village / Ploceus cucullatus
- Weaver, Vitelline Masked- / Ploceus vitellinus
- Weaver, White-browed Sparrow- / Plocepasser mahali
- Weaver, White-headed Buffalo- / Dinemellia dinemelli
- Weebill / Smicrornis brevirostris
- Wheatear, Abyssinian / Oenanthe lugubris
- Wheatear, Black / Oenanthe leucura
- Wheatear, Capped / Oenanthe pileata
- Wheatear, Isabelline / Oenanthe isabellina
- Wheatear, Northern / Oenanthe oenanthe
- Wheatear, Pied / Oenanthe pleschanka
- Whimbrel, / Numenius phaeopus
- Whinchat, / Saxicola rubetra
- Whipbird, Eastern / Psophodes olivaceus
- Whip-poor-will, Eastern / Antrostomus vociferus
- Whistler, Bornean / Pachycephala hypoxantha
- Whistler, Golden / Pachycephala pectoralis
- Whistler, Gray / Pachycephala simplex
- White-eye, Black-capped / Zosterops atricapilla
- White-eye, Heuglin’s / Zosterops poliogastrus
- White-eye, Indian / Zosterops palpebrosus
- White-eye, Warbling / Zosterops japonicus
- Whitethroat, Greater / Curruca communis
- Whitethroat, Lesser / Curruca curruca
- Whydah, Pin-tailed / Vidua macroura
- Whydah, Straw-tailed / Vidua fischeri
- Widowbird, Fan-tailed / Euplectes axillaris
- Widowbird, Long-tailed / Euplectes progne
- Widowbird, Red-collared / Euplectes ardens
- Wigeon, American / Mareca americana
- Willet, / Tringa semipalmata
- Willie-wagtail / Rhipidura leucophrys
- Woodcock, American / Scolopax minor
- Woodcreeper, Black-banded / Dendrocolaptes picumnus
- Woodcreeper, Buff-throated / Xiphorhynchus guttatus
- Woodcreeper, Cinnamon-throated / Dendrexetastes rufigula
- Woodcreeper, Cocoa / Xiphorhynchus susurrans
- Woodcreeper, Duida / Lepidocolaptes duidae
- Woodcreeper, Ivory-billed / Xiphorhynchus flavigaster
- Woodcreeper, Lesser / Xiphorhynchus fuscus
- Woodcreeper, Long-billed / Nasica longirostris
- Woodcreeper, Montane / Lepidocolaptes lacrymiger
- Woodcreeper, Northern Barred- / Dendrocolaptes sanctithomae
- Woodcreeper, Olivaceous / Sittasomus griseicapillus
- Woodcreeper, Olive-backed / Xiphorhynchus triangularis
- Woodcreeper, Plain-brown / Dendrocincla fuliginosa
- Woodcreeper, Scaled / Lepidocolaptes squamatus
- Woodcreeper, Spot-crowned / Lepidocolaptes affinis
- Woodcreeper, Spotted / Xiphorhynchus erythropygius
- Woodcreeper, Straight-billed / Dendroplex picus
- Woodcreeper, Streak-headed / Lepidocolaptes souleyetii
- Woodcreeper, Strong-billed / Xiphocolaptes promeropirhynchus
- Woodcreeper, Wedge-billed / Glyphorynchus spirurus
- Woodcreeper, White-throated / Xiphocolaptes albicollis
- Woodhoopoe, Green / Phoeniculus purpureus
- Woodpecker, Acorn / Melanerpes formicivorus
- Woodpecker, African Gray / Dendropicos goertae
- Woodpecker, American Three-toed / Picoides dorsalis
- Woodpecker, Arizona / Dryobates arizonae
- Woodpecker, Black / Dryocopus martius
- Woodpecker, Black-backed / Picoides arcticus
- Woodpecker, Black-cheeked / Melanerpes pucherani
- Woodpecker, Black-necked / Colaptes atricollis
- Woodpecker, Buff-rumped / Meiglyptes grammithorax
- Woodpecker, Chestnut-colored / Celeus castaneus
- Woodpecker, Cinnamon / Celeus loricatus
- Woodpecker, Cream-colored / Celeus flavus
- Woodpecker, Crimson-crested/ Campephilus melanoleucos
- Woodpecker, Crimson-mantled / Colaptes rivolii
- Woodpecker, Downy / Dryobates pubescens
- Woodpecker, Gila / Melanerpes uropygialis
- Woodpecker, Golden-fronted / Melanerpes aurifrons
- Woodpecker, Golden-olive / Colaptes rubiginosus
- Woodpecker, Gray-and-buff / Hemicircus concretus
- Woodpecker, Gray-capped Pygmy / Yungipicus canicapillus
- Woodpecker, Gray-headed / Picus canus
- Woodpecker, Great Slaty / Mulleripicus pulverulentus
- Woodpecker, Great Spotted / Dendrocopos major
- Woodpecker, Green-barred / Colaptes melanochloros
- Woodpecker, Guayaquil / Campephilus gayaquilensis
- Woodpecker, Hairy / Dryobates villosus
- Woodpecker, Helmeted / Celeus galeatus
- Woodpecker, Hoffmann’s / Melanerpes hoffmannii
- Woodpecker, Laced / Picus vittatus
- Woodpecker, Ladder-backed / Dryobates scalaris
- Woodpecker, Lewis's / Melanerpes lewis
- Woodpecker, Lineated / Dryocopus lineatus
- Woodpecker, Little / Dryobates passerinus
- Woodpecker, Maroon / Blythipicus rubiginosus
- Woodpecker, Middle Spotted / Dendrocoptes medius
- Woodpecker, Nubian / Campethera nubica
- Woodpecker, Nuttall’s / Dryobates nuttallii
- Woodpecker, Pale-billed / Campephilus guatemalensis
- Woodpecker, Pileated / Dryocopus pileatus
- Woodpecker, Red-bellied / Melanerpes carolinus
- Woodpecker, Red-cockaded / Dryobates borealis
- Woodpecker, Red-crowned / Melanerpes rubricapillus
- Woodpecker, Red-headed / Melanerpes erythrocephalus
- Woodpecker, Red-rumped / Dryobates kirkii
- Woodpecker, Robust / Campephilus robustus
- Woodpecker, Rufous / Micropternus brachyurus
- Woodpecker, Rufous-winged / Piculus simplex
- Woodpecker, Scarlet-backed / Dryobates callonotus
- Woodpecker, Smoky-brown / Dryobates fumigatus
- Woodpecker, Spot-breasted / Colaptes punctigula
- Woodpecker, Stripe-breasted / Dendrocopos atratus
- Woodpecker, Sunda Pygmy / Yungipicus moluccensis
- Woodpecker, Syrian / Dendrocopos syriacus
- Woodpecker, White-browed / Piculus aurulentus
- Woodpecker, White-spotted / Dryobates spilogaster
- Woodpecker, Yellow-eared / Dryobates maculifrons
- Woodpecker, Yellow-fronted / Melanerpes flavifrons
- Woodpecker, Yellow-tufted / Melanerpes cruentatus
- Woodpecker, Yucatan / Melanerpes pygmaeus
- Woodshrike, Large / Tephrodornis virgatus
- Woodswallow, Ashy / Artamus fuscus
- Woodswallow, Dusky / Artamus cyanopterus
- Woodswallow, Masked / Artamus personatus
- Woodswallow, White-breasted / Artamus leucorynchus
- Woodswallow, White-browed / Artamus superciliosus
- Wren, Band-backed / Campylorhynchus zonatus
- Wren, Bay / Cantorchilus nigricapillus
- Wren, Bewick's / Thryomanes bewickii
- Wren, Black-bellied / Pheugopedius fasciatoventris
- Wren, Cactus / Campylorhynchus brunneicapillus
- Wren, Canyon / Catherpes mexicanus
- Wren, Carolina / Thryothorus ludovicianus
- Wren, Eurasian / Troglodytes troglodytes
- Wren, Fasciated / Campylorhynchus fasciatus
- Wren, Gray-breasted Wood- / Henicorhina leucophrys
- Wren, Grass / Cistothorus platensis
- Wren, House / Troglodytes aedon
- Wren, Marsh / Cistothorus palustris
- Wren, Pacific / Troglodytes pacificus
- Wren, Rock / Salpinctes obsoletus
- Wren, Rufous / Cinnycerthia platensis
- Wren, Rufous-naped / Campylorhynchus rufinucha
- Wren, Superciliated / Cantorchilus superciliaris
- Wren, Thrush-like / Campylorhynchus turdinus
- Wren, White-headed / Campylorhynchus albobrunneus
- Wren, Winter / Troglodytes hiemalis
- Wrentit, / Chamaea fasciata
- Wryneck, Eurasian / Jynx torquilla
- Wryneck, Rufous-necked / Jynx ruficollis
- Xenops, Streaked / Xenops rutilans
- Yellowhammer, / Emberiza citrinella
- Yellowlegs, Greater / Tringa melanoleuca
- Yellowlegs, Lesser / Tringa flavipes
- Yellownape, Greater / Chrysophlegma flavinucha
- Yellowthroat, Common / Geothlypis trichas
- Yellowthroat, Masked / Geothlypis aequinoctialis
- Yuhina, Striated / Staphida castaniceps