- Wandering Albatross
- Wandering Whistling Duck
- Wattled Jacana
- Waved Woodpecker
- Wedge-billed Woodcreeper
- Wedge-tailed Eagle
- Wedge-tailed Grass Finch
- Wedge-tailed Shearwater
- Weebill
- Weka
- Welcome Swallow
- West Peruvian Dove
- Western Barn Owl
- Western Bluebird
- Western Bowerbird
- Western Cattle Egret
- Western Crowned Pigeon
- Western Grebe
- Western Gull
- Western Kingbird
- Western Osprey
- Western Rosella
- Western Sandpiper
- Western Swamphen
- Western Tanager
- Western Thornbill
- Western Whipbird
- Western Yellow Robin
- Westland Petrel
- Whimbrel
- Whimbrel (hudsonicus)
- Whiskered Myiobius
- Whistling Kite
- White-banded Swallow
- White-barred Piculet
- White-bearded Manakin
- White-bellied Cuckooshrike
- White-bellied Sea Eagle
- White-breasted Nuthatch
- White-breasted Woodswallow
- White-browed Antbird
- White-browed Babbler
- White-browed Crake
- White-browed Robin
- White-browed Scrubwren
- White-chinned Petrel
- White-chinned Sapphire
- White-crowned Manakin
- White-crowned Sparrow
- White-crowned Wheatear
- White-eared Honeyeater
- White-eyed Parakeet
- White-faced Heron
- White-faced Ibis
- White-flanked Antwren
- White-fronted Honeyeater
- White-fronted Manakin
- White-fronted Tern
- White-gaped Honeyeater
- White-headed Marsh Tyrant
- White-headed Pigeon
- White-headed Starling
- White-headed Stilt
- White-headed Woodpecker
- White-lined Tanager
- White-naped Honeyeater
- White-necked Heron
- White-necked Jacobin
- White-necked Thrush
- White-plumed Antbird
- White-plumed Honeyeater
- White-quilled Rock Pigeon
- White-rumped Sandpiper
- White-tailed Goldenthroat
- White-throated Honeyeater
- White-throated Kingfisher
- White-throated Manakin
- White-throated Swift
- White-throated Toucan
- White-throated Toucan (cuvieri)
- White-throated Treecreeper
- White-tipped Dove
- White-tufted Grebe
- White-winged Becard
- White-winged Chough
- White-winged Swallow
- White-winged Triller
- White Hawk
- White Stork
- Whitehead
- Whooping Crane
- Wild Turkey
- Willet
- Williamson's Sapsucker
- Willie Wagtail
- Wilson's Phalarope
- Wilson's Plover
- Wing-barred Piprites
- Wing-barred Seedeater
- Wompoo Fruit Dove
- Wonga Pigeon
- Wood Duck
- Wood Sandpiper