- Wallcreeper
- Water Pipit
- Water Rail
- Western Barn Owl
- Western Black-eared Wheatear
- Western Bonelli's Warbler
- Western Cattle Egret
- Western House Martin
- Western Jackdaw
- Western Marsh Harrier
- Western Orphean Warbler
- Western Reef Heron
- Western Rock Nuthatch
- Western Sandpiper
- Western Subalpine Warbler
- Western Swamphen
- Western Yellow Wagtail
- Western Yellow Wagtail (feldegg)
- Whinchat
- Whiskered Tern
- White-backed Woodpecker
- White-crowned Wheatear
- White-headed Duck
- White-rumped Sandpiper
- White-throated Dipper
- White-winged Snowfinch
- White-winged Tern
- White's Thrush
- White Stork
- White Wagtail
- White Wagtail (yarrellii)
- Whooper Swan
- Willow Tit
- Willow Warbler
- Wilson's Storm Petrel
- Wood Duck
- Wood Sandpiper
- Wood Warbler
- Woodchat Shrike
- Woodlark