- Wahlberg's Eagle
- Wallcreeper
- Water Pipit
- Water Rail
- Wattled Jacana
- Waved Woodpecker
- Wedge-billed Woodcreeper
- Wedge-tailed Sabrewing
- West Peruvian Dove
- Western Barn Owl
- Western Black-eared Wheatear
- Western Bonelli's Warbler
- Western Cattle Egret
- Western Emerald
- Western Jackdaw
- Western Marsh Harrier
- Western Olivaceous Warbler
- Western Osprey
- Western Plantain-eater
- Western Reef Heron
- Western Subalpine Warbler
- Western Swamphen
- Western Yellow Wagtail
- Western Yellow Wagtail (feldegg)
- Western Yellow Wagtail (flavissima)
- Whinchat
- Whiskered Tern
- White-backed Vulture
- White-banded Swallow
- White-bearded Manakin
- White-bellied Woodstar
- White-billed Buffalo Weaver
- White-booted Racket-tail
- White-breasted Cormorant
- White-breasted Nuthatch
- White-breasted Wood Wren
- White-capped Dipper
- White-capped Tanager
- White-chinned Sapphire
- White-collared Manakin
- White-collared Swift
- White-crested Coquette
- White-crested Helmetshrike
- White-crowned Manakin
- White-crowned Parrot
- White-crowned Robin-Chat
- White-crowned Sparrow
- White-eared Hummingbird
- White-edged Oriole
- White-eyed Vireo
- White-faced Whistling Duck
- White-flanked Antwren
- White-fronted Amazon
- White-headed Marsh Tyrant
- White-headed Wren
- White-lined Tanager
- White-lored Warbler
- White-necked Jacobin
- White-necked Puffbird
- White-rumped Seedeater
- White-shouldered Black Tit
- White-sided Flowerpiercer
- White-tailed Eagle
- White-tailed Emerald
- White-tailed Hawk
- White-tailed Kite
- White-tailed Lapwing
- White-tailed Starfrontlet
- White-tailed Tyrannulet
- White-throated Crake
- White-throated Dipper
- White-throated Magpie-Jay
- White-throated Manakin
- White-throated Mountaingem
- White-throated Sparrow
- White-throated Thrush
- White-throated Toucanet
- White-tipped Dove
- White-tipped Quetzal
- White-vented Plumeleteer
- White-whiskered Hermit
- White-whiskered Spinetail
- White-winged Becard
- White-winged Dove
- White-winged Lark
- White-winged Swallow
- White-winged Tanager
- White-winged Tern
- White-winged Woodpecker
- White Hawk
- White Stork
- White Wagtail
- White Wagtail (yarrellii)
- Whooper Swan
- Whooping Motmot
- Wild Turkey
- Willet
- Wilson's Phalarope
- Wilson's Storm Petrel
- Wilson's Warbler
- Wing-barred Seedeater
- Wire-tailed Swallow
- Wood Sandpiper
- Wood Stork
- Wood Warbler
- Woodchat Shrike
- Woodlark