| Common Name | Scientific name |
|---|---|
| Wild Turkey | Meleagris gallopavo |
| Willet | Tringa semipalmata |
| Williamson's Sapsucker | Sphyrapicus thyroideus |
| Willow Flycatcher | Empidonax traillii |
| Willow Ptarmigan | Lagopus lagopus |
| Willow Tit | Poecile montanus |
| Willow Warbler | Phylloscopus trochilus |
| Wilson's Phalarope | Phalaropus tricolor |
| Wilson's Plover | Charadrius wilsonia |
| Wilson's Snipe | Gallinago delicata |
| Wilson's Storm Petrel | Oceanites oceanicus |
| Wilson's Warbler | Cardellina pusilla |
| Wine-throated Hummingbird | Atthis ellioti |
| Wing-banded Antbird | Myrmornis torquata |
| Winter Wren | Troglodytes hiemalis |
| Wood Duck | Aix sponsa |
| Wood Lark | Lullula arborea |
| Wood Sandpiper | Tringa glareola |
| Wood Stork | Mycteria americana |
| Wood Thrush | Hylocichla mustelina |
| Wood Warbler | Phylloscopus sibilatrix |
| Woodchat Shrike | Lanius senator |
| Woodhouse's Scrub-Jay | Aphelocoma woodhouseii |
| Worm-eating Warbler | Helmitheros vermivorum |
| Worthen's Sparrow | Spizella wortheni |
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