- Wandering Albatross
- Water Pipit
- Water Rail
- Wedge-tailed Eagle
- Weka
- Welcome Swallow
- Western Black-eared Wheatear
- Western Cattle Egret
- Western House Martin
- Western Jackdaw
- Western Marsh Harrier
- Western Reef Heron
- Western Rock Nuthatch
- Western Subalpine Warbler
- Western Swamphen
- Western Yellow Wagtail
- Western Yellow Wagtail (feldegg)
- Westland Petrel
- Whinchat
- Whistling Kite
- White-bellied Cuckooshrike
- White-bellied Sea Eagle
- White-breasted Cormorant
- White-browed Sparrow-Weaver
- White-cheeked Honeyeater
- White-chinned Petrel
- White-faced Heron
- White-faced Storm Petrel
- White-fronted Tern
- White-necked Heron
- White-rumped Sandpiper
- White-rumped Vulture
- White-tailed Lapwing
- White-throated Kingfisher
- White-throated Robin-Chat
- White-winged Snowfinch
- White Stork
- White Wagtail
- Willet
- Willie Wagtail
- Willow Warbler
- Wilson's Warbler
- Wompoo Fruit Dove
- Wonga Pigeon
- Wood Sandpiper
- Woodchat Shrike
- Wrybill