- Wailing Cisticola
- Wandering Tattler
- Water Pipit
- Water Thick-knee
- Watkins's Antpitta
- Wattled Crane
- Wattled Jacana
- Wattled Starling
- Waved Woodpecker
- Wedge-billed Woodcreeper
- Wedge-tailed Grass Finch
- West Peruvian Dove
- Western Bonelli's Warbler
- Western Capercaillie
- Western Cattle Egret
- Western Jackdaw
- Western Marsh Harrier
- Western Olivaceous Flatbill
- Western Orphean Warbler
- Western Reef Heron
- Western Sandpiper
- Western Subalpine Warbler
- Western Swamphen
- Western Wood Pewee
- Western Yellow Wagtail
- Whinchat
- Whiskered Myiobius
- Whiskered Tern
- White-backed Duck
- White-backed Mousebird
- White-backed Vulture
- White-banded Swallow
- White-banded Tyrannulet
- White-barred Piculet
- White-bearded Manakin
- White-bellied Spinetail
- White-bellied Sunbird
- White-bellied Woodstar
- White-breasted Cormorant
- White-breasted Parakeet
- White-breasted Wood Wren
- White-browed Antbird
- White-browed Gnatcatcher
- White-browed Purpletuft
- White-browed Robin-Chat
- White-browed Scrub Robin
- White-browed Sparrow-Weaver
- White-capped Dipper
- White-cheeked Pintail
- White-chested Emerald
- White-chested Puffbird
- White-chinned Petrel
- White-chinned Sapphire
- White-chinned Woodcreeper
- White-collared Swift
- White-crested Helmetshrike
- White-crested Spadebill
- White-crowned Lapwing
- White-crowned Manakin
- White-eared Barbet
- White-edged Oriole
- White-eyed Parakeet
- White-eyed Tody-Tyrant
- White-faced Nunbird
- White-faced Whistling Duck
- White-flanked Antwren
- White-fronted Bee-eater
- White-fronted Manakin
- White-fronted Plover
- White-headed Marsh Tyrant
- White-headed Vulture
- White-lined Tanager
- White-lored Euphonia
- White-lored Tyrannulet
- White-necked Jacobin
- White-necked Raven
- White-necked Thrush
- White-plumed Antbird
- White-rumped Sandpiper
- White-shouldered Tanager
- White-sided Flowerpiercer
- White-tailed Eagle
- White-tailed Hawk
- White-tailed Jay
- White-tailed Kite
- White-tailed Nightjar
- White-thighed Swallow
- White-throated Canary
- White-throated Daggerbill
- White-throated Dipper
- White-throated Manakin
- White-throated Quail-Dove
- White-throated Robin-Chat
- White-throated Spadebill
- White-throated Swallow
- White-throated Toucan
- White-throated Toucanet
- White-throated Tyrannulet
- White-tipped Dove
- White-tipped Sicklebill
- White-tipped Swift
- White-vented Euphonia
- White-winged Becard
- White-winged Brushfinch
- White-winged Potoo
- White-winged Swallow
- White Hawk
- White Stork
- White Wagtail
- Whooper Swan
- Willet
- Willow Tit
- Willow Warbler
- Wilson's Phalarope
- Wilson's Snipe
- Wing-banded Antbird
- Wing-banded Wren
- Wing-barred Piprites
- Wing-barred Seedeater
- Wire-crested Thorntail
- Wire-tailed Swallow
- Wood Sandpiper
- Wood Stork
- Wood Warbler
- Woodlark
- Woodwards' Batis