- Wallcreeper
- Wattled Jacana
- Waved Albatross
- West Peruvian Dove
- Western Banded Snake Eagle
- Western Cattle Egret
- Western Marsh Harrier
- Western Osprey
- Western Red-billed Hornbill
- Whimbrel
- Whimbrel (hudsonicus)
- Whinchat
- White-backed Vulture
- White-banded Tyrannulet
- White-bellied Cinclodes
- White-bellied Hummingbird
- White-bellied Woodstar
- White-browed Antbird
- White-browed Brushfinch
- White-browed Chat-Tyrant
- White-browed Ground Tyrant
- White-browed Tit-Spinetail
- White-cheeked Cotinga
- White-cheeked Pintail
- White-chinned Petrel
- White-chinned Sapphire
- White-collared Jay
- White-crested Elaenia
- White-crowned Lapwing
- White-eared Solitaire
- White-edged Oriole
- White-eyed Parakeet
- White-fronted Ground Tyrant
- White-headed Brushfinch
- White-headed Marsh Tyrant
- White-necked Jacobin
- White-tailed Jay
- White-throated Bee-eater
- White-throated Hawk
- White-tipped Dove
- White-tufted Grebe
- White-winged Brushfinch
- White-winged Cinclodes
- White-winged Diuca Finch
- White-winged Guan
- Willow Warbler
- Wilson's Phalarope
- Wilson's Storm Petrel
- Wing-barred Seedeater
- Wood Stork
- Wood Warbler
- Wren-like Rushbird