- Wattled Jacana
- Wedge-billed Woodcreeper
- Western Banded Snake Eagle
- Western Barn Owl
- Western Black-eared Wheatear
- Western Bonelli's Warbler
- Western Cattle Egret
- Western Emerald
- Western Jackdaw
- Western Kingbird
- Western Olivaceous Warbler
- Western Orphean Warbler
- Western Osprey
- Western Plantain-eater
- Western Red-billed Hornbill
- Western Reef Heron
- Western Subalpine Warbler
- Western Wood Pewee
- Western Yellow Wagtail
- Whinchat
- Whiskered Tern
- Whistling Heron
- White-backed Vulture
- White-banded Swallow
- White-bellied Woodstar
- White-billed Buffalo Weaver
- White-booted Racket-tail
- White-breasted Cormorant
- White-browed Fulvetta
- White-browed Wagtail
- White-capped Dipper
- White-cheeked Tern
- White-collared Blackbird
- White-crested Coquette
- White-crowned Lapwing
- White-crowned Manakin
- White-crowned Parrot
- White-crowned Sparrow
- White-crowned Wheatear
- White-eared Bulbul
- White-eared Jacamar
- White-eared Puffbird
- White-eyed Gull
- White-eyed Parakeet
- White-faced Nunbird
- White-faced Whistling Duck
- White-flanked Antwren
- White-fronted Amazon
- White-headed Marsh Tyrant
- White-lined Tanager
- White-lored Euphonia
- White-lored Warbler
- White-naped Brushfinch
- White-necked Jacobin
- White-necked Puffbird
- White-rumped Seedeater
- White-rumped Shama
- White-rumped Swallow
- White-sided Flowerpiercer
- White-spectacled Bulbul
- White-tailed Hawk
- White-tailed Kite
- White-tailed Starfrontlet
- White-throated Kingfisher
- White-throated Magpie-Jay
- White-throated Quail-Dove
- White-throated Sparrow
- White-tipped Dove
- White-tipped Quetzal
- White-vented Euphonia
- White-vented Plumeleteer
- White-whiskered Hermit
- White-whiskered Spinetail
- White-winged Dove
- White-winged Nightjar
- White-winged Parakeet
- White-winged Snowfinch
- White-winged Swallow
- White Hawk
- White Stork
- White Wagtail
- Whooper Swan
- Willet
- Willow Warbler
- Wilson's Snipe
- Wilson's Warbler
- Wire-tailed Manakin
- Wood Duck
- Wood Stork
- Wood Thrush
- Woodchat Shrike
- Woolly-necked Stork