- White-winged Thicket-robin
- White-winged Tit
- White-winged Triller
- White-winged Warbler
- White-winged Widowbird
- White-winged Wood-Duck
- White-winged Wood Duck
- White-winged Woodpecker
- White-winged brush-finch
- White Ani
- White Banded Tyrannulet
- White Bear Lake, MN(Ramsey County open space, Bald Eagle Lake,)
- White Bellbird
- White Browed Spinetail
- White Cockatoo
- White Collared Swift
- White Crowned Pigeon
- White Eared-Pheasant
- White Eared Pheasant
- White Hawk
- White Helmet-shrike
- White Helmetshrike
- White Ibis
- White Imperial-Pigeon
- White Imperial Pigeon
- White Laughingthrush
- White Memorial Conservation Area
- White Memorial Conservaton Area
- White Memorial Conservaton Area(Litchfield Conn.)
- White Monjita
- White Nile Rufous Sparrow
- White Sparrow
- White Stork
- White Tailed Eagle
- White Tailed Tyrannulet
- White Tern
- White Tipped Dove
- White Wagtail
- White Woodpecker
- White breasted Kingfisher
- White headed Vulture
- White rumped Triller
- Whitefish Point Bird Observatory
- Whitehead
- Whitehead's Babbler
- Whitehead's Broadbill
- Whitehead's Magpie
- Whitehead's Spiderhunter
- Whitehead's Swiftlet
- Whitehead's Tree-Babbler
- Whitehead's Trogon
- Whitely's Toucanet
- Whiteman Melidectes
- Whiteman Mountain Melidectes
- Whiteman Mountains Warbler
- Whitemud Creek Ravine
- Whitemud Creek Ravine(Edmonton, AB. Access Whitemud Park from Keillor Rd)
- Whitewater Draw
- Whittier Narrows Natural Area
- Whittier Narrows Natural Area and Nature Center(South El Monte)
- Whooper Swan
- Whooping Crane
- Whooping Motmot
- Whyte's Barbet
- Whyte's Double-collared Sunbird
- Wicken Fen
- Widbrook Plantation
- Widbrook Plantation(Bradford on Avon)
- Wied's Crested Flycatcher
- Wied's Neopelma
- Wied's Tyrant-Manakin
- Wied's Tyrant Manakin
- Wigeon
- Wigeons
- Wigtown Bay Reserve(Dumfries and Galloway)
- Wigtown Bay Reserve (Dumfries and Galloway)
- Wild Ass Sanctuary
- Wild Turkey
- Wilderness Island
- Wildfowl and Wetlands Trust
- Wildwood Lake Sanctuary
- Wilkins's Finch
- Willard's Sooty Boubou
- Willcock's Honeyguide
- Willcocks's Honeyguide
- Willet
- Williams's Lark
- Williamson's Flycatcher
- Williamson's Sapsucker
- Willie-Wagtail
- Willie-wagtail
- Willie Wagtail
- Willis's Antbird
- Willisornis
- Willisornis poecilinotus
- Willisornis vidua
- Willow Flycatcher
- Willow Grouse
- Willow Ptarmigan
- Willow Sparrow
- Willow Tit
- Willow Warbler
- Willow and Watson Lakes
- Wilson's Bird-of-Paradise
- Wilson's Bird-of-paradise
- Wilson's Bird of Paradise
- Wilson's Indigobird
- Wilson's Phalarope
- Wilson's Plover
- Wilson's Shearwater
- Wilson's Snipe
- Wilson's Storm-Petrel
- Wilson's Storm-petrel
- Wilson's Storm Petrel
- Wilson's Warbler
- Wilson's snipe
- Wilson and Watson Lakes
- Wilsonia
- Wilsonia canadensis
- Wilsonia citrina
- Wilsonia pusilla
- Wilsons Snipe
- Wiltshire
- Winchell's Kingfisher
- Winding Cisticola
- Windsor Great Park
- Windward Islands
- Wine-throated Hummingbird
- Wing-banded Antbird
- Wing-banded Hornero
- Wing-banded Wren
- Wing-barred Manakin
- Wing-barred Piprites
- Wing-barred Seedeater
- Wing-snapping Cisticola
- Winifred's Warbler
- Winneba Plains
- Winter Wren
- Winterset/Haws Park(Wakefield west Yorkshire)
- Winterset and Haws Park
- Wire-crested Thorntail
- Wire-tailed Manakin
- Wire-tailed Swallow
- Wisconsin
- Witherby's Lark
- Wolinski National Park
- Wolinski National Park(The very north west of Poland. On the coast.)
- Wollongong pelagic
- Wolverine
- Wolves Wood
- Wolves Wood RSPB Reserve
- Wompoo Fruit-Dove
- Wompoo Fruit Dove
- Wonga Pigeon
- Wood-Partridge
- Wood-Partridges
- Wood-Quail
- Wood-Quails
- Wood-Rail
- Wood-Rails
- Wood Duck
- Wood Lane Nature Reserve
- Wood Lark
- Wood Nuthatch
- Wood Partridge
- Wood Partridges
- Wood Pipit
- Wood Quail
- Wood Quails
- Wood Rail
- Wood Rails
- Wood Sandpiper
- Wood Snipe
- Wood Stork
- Wood Thrush
- Wood Warbler
- Wood of Cree
- Wood of Cree RSPB Reserve Scotland
- Woodbourne Shorebird Reserve
- Woodchat Shrike
- Woodford's Rail
- Woodfordia
- Woodfordia lacertosa
- Woodfordia superciliosa
- Woodhouse's Antpecker
- Woodhouse's Scrub-Jay
- Woodhouse's Scrub Jay
- Woodland Kingfisher
- Woodland Pipit
- Woodlark
- Woodpecker
- Woodpecker Finch
- Woodpecker Starling
- Woodpeckers
- Woodward's Batis
- Woodward's Shrike-thrush
- Woodward's Shrike Thrush
- Woolly-necked Stork
- Worcester's Buttonquail
- Worcestershire
- Worm-Eating Warbler
- Worm-eating Warbler
- Worthen's Sparrow
- Wreathed Hornbill
- Wren
- Wren-like Rushbird
- Wrenthrush
- Wrentit
- Wrinkled Hornbill
- Writhe-billed Hornbill
- Writhed Hornbill
- Wrybill
- Wye-Elan Woods
- Wye-Elan Woods RSPB Reserves Wales
- Wynaad Laughing-thrush
- Wynaad Laughingthrush
- Wyoming
- Wyre Forest
- Xanthocephalus
- Xanthocephalus xanthocephalus
- Xanthomixis
- Xanthomixis apperti
- Xanthomixis cinereiceps
- Xanthomixis tenebrosa
- Xanthomixis zosterops
- Xanthomyza
- Xanthomyza phrygia
- Xanthopsar flavus
- Xanthotis
- Xanthotis flaviventer
- Xanthotis macleayana
- Xanthotis macleayanus
- Xanthotis polygramma
- Xanthotis polygrammus
- Xanthotis provocator
- Xanthoura
- Xanthoura yncas
- Xantus's Hummingbird
- Xantus's Murrelet
- Xavier's Greenbul
- Xema
- Xema sabini
- Xenerpestes
- Xenerpestes minlosi
- Xenerpestes singularis
- Xenicus
- Xenicus gilviventris
- Xenicus longipes
- Xenicus lyalli
- Xenocopsychus
- Xenocopsychus ansorgei
- Xenodacnis
- Xenodacnis parina
- Xenoglaux
- Xenoglaux loweryi
- Xenoligea
- Xenoligea montana
- Xenoperdix
- Xenoperdix obscurata
- Xenoperdix obscuratus
- Xenoperdix udzungwensis
- Xenopipo
- Xenopipo atronitens
- Xenopipo flavicapilla
- Xenopipo holochlora
- Xenopipo unicolor
- Xenopipo uniformis
- Xenopirostris
- Xenopirostris damii
- Xenopirostris polleni
- Xenopirostris xenopirostris
- Xenops
- Xenops milleri
- Xenops minutus
- Xenops rutilans
- Xenops rutilus
- Xenops tenuirostris
- Xenopsaris
- Xenopsaris albinucha
- Xenornis
- Xenornis setifrons
- Xenospingus
- Xenospingus concolor
- Xenospiza
- Xenospiza baileyi
- Xenotriccus
- Xenotriccus callizonus
- Xenotriccus mexicanus
- Xenus
- Xenus cinereus
- Xingu Scale-backed Antbird
- Xingu Woodcreeper
- Xinjiang Ground-Jay
- Xinjiang Ground Jay
- Xiphidiopicus
- Xiphidiopicus percussus
- Xiphidiopicus percussus percussus
- Xiphirhynchus
- Xiphirhynchus superciliaris
- Xiphocolaptes
- Xiphocolaptes albicollis
- Xiphocolaptes carajaensis
- Xiphocolaptes falcirostris
- Xiphocolaptes major
- Xiphocolaptes promeropirhynchus
- Xipholena
- Xipholena atropurpurea
- Xipholena lamellipennis
- Xipholena punicea
- Xiphorhynchus
- Xiphorhynchus atlanticus
- Xiphorhynchus chunchotambo
- Xiphorhynchus elegans
- Xiphorhynchus erythropygius
- Xiphorhynchus eytoni
- Xiphorhynchus flavigaster
- Xiphorhynchus fuscus
- Xiphorhynchus guttatoides
- Xiphorhynchus guttatus
- Xiphorhynchus juruanus
- Xiphorhynchus kienerii
- Xiphorhynchus lachrymosus
- Xiphorhynchus necopinus
- Xiphorhynchus obsoletus
- Xiphorhynchus ocellatus
- Xiphorhynchus pardalotus
- Xiphorhynchus picus
- Xiphorhynchus spixii
- Xiphorhynchus susurrans
- Xiphorhynchus triangularis
- Xolmis
- Xolmis cinerea
- Xolmis cinereus
- Xolmis coronata
- Xolmis dominicanus
- Xolmis irupero
- Xolmis irupero irupero
- Xolmis pyrope
- Xolmis pyrope fortis
- Xolmis rubetra
- Xolmis salinarum
- Xolmis velata
- Xolmis velatus
- Yala
- Yala National Park


