- Wallcreeper
- Water Pipit
- Water Rail
- Western Bonelli's Warbler
- Western Cattle Egret
- Western House Martin
- Western Jackdaw
- Western Marsh Harrier
- Western Reef Heron
- Western Yellow Wagtail
- Western Yellow Wagtail (cinereocapilla)
- Western Yellow Wagtail (feldegg)
- Western Yellow Wagtail (flavissima)
- Western Yellow Wagtail (iberiae)
- Whinchat
- Whiskered Tern
- White-tailed Eagle
- White-throated Dipper
- White-winged Snowfinch
- White-winged Tern
- White Stork
- White Wagtail
- Whooper Swan
- Willow Tit
- Willow Warbler
- Wood Duck
- Wood Sandpiper
- Wood Warbler
- Woodlark