- Wallcreeper
- Water Pipit
- Water Rail
- Western Barn Owl
- Western Black-eared Wheatear
- Western Bonelli's Warbler
- Western Cattle Egret
- Western Jackdaw
- Western Marsh Harrier
- Western Rock Nuthatch
- Western Subalpine Warbler
- Western Swamphen
- Western Yellow Wagtail
- Whinchat
- Whiskered Tern
- White-backed Woodpecker
- White-rumped Swift
- White-tailed Eagle
- White-throated Dipper
- White-throated Sparrow
- White Stork
- White Wagtail
- Whooper Swan
- Willow Tit
- Willow Warbler
- Wilson's Storm Petrel
- Wood Sandpiper
- Wood Warbler
- Woodchat Shrike
- Woodlark