- Wattled Jacana
- Waved Woodpecker
- Wedge-billed Woodcreeper
- Wedge-tailed Grass Finch
- Western Cattle Egret
- Western Sandpiper
- White-banded Swallow
- White-bearded Manakin
- White-crowned Manakin
- White-flanked Antwren
- White-headed Marsh Tyrant
- White-lined Tanager
- White-necked Jacobin
- White-necked Thrush
- White-rumped Sandpiper
- White-tailed Hawk
- White-tailed Kite
- White-tailed Nightjar
- White-throated Manakin
- White-throated Toucan
- White-tipped Dove
- White-winged Becard
- White-winged Swallow
- White Hawk
- White Woodpecker
- Willet
- Wilson's Plover
- Wing-barred Seedeater
- Wood Stork