| a trip of | Waders |
| a flock of | Wagtails |
| a flight of (Pied) | Wagtails |
| a flock of (Pied) | Wagtails |
| a roost of (Pied) | Wagtails |
| a volery of (White) | Wagtails |
| a bouquet of | Warblers |
| a confusion of | Warblers |
| a fall of | Warblers |
| a wrench of | Warblers |
| a dichotomy of (black-and-white) | Warblers |
| a distinction of (black-and-white) | Warblers |
| an integration of (black-and-white) | Warblers |
| a contusion of (black-throated green) | Warblers |
| a skulk of (Connecticut) | Warblers |
| a (Connecticut) yankee of | Warblers |
| a seclusion of (hermit) | Warblers |
| a Derby of (Kentucky) | Warblers |
| a scarcity of (Kirtland’s) | Warblers |
| a corsage of (magnolia) | Warblers |
| a wake of (mourning) | Warblers |
| a reading of (palm) | Warblers |
| a cone of (pine) | Warblers |
| an embarrassment of (red-faced) | Warblers |
| a cord of (wood) | Warblers |
| a stream of (yellow) | Warblers |
| a sweetness of (yellow) | Warblers |
| a trepidation of (yellow) | Warblers |
| a brace (two) of | Waterfowl |
| a bunch of | Waterfowl |
| a congregation of | Waterfowl |
| a flock of | Waterfowl |
| a knob of | Waterfowl |
| a leash (three) of | Waterfowl |
| a little knob of | Waterfowl |
| a plump of | Waterfowl |
| a raft of | Waterfowl |
| a skein of | Waterfowl |
| a sute of | Waterfowl |
| a trip of | Waterfowl |
| a wedge of | Waterfowl |
| a dopping of | Water ouzels |
| a teeter of | Waterthrushes |
| a ear-full of | Waxwings |
| a grosbeaks of | Waxwings |
| a museum of | Waxwings |
| a bowl of | Wheaters |
| a shaft of | Wheaters |
| a whistling of | Whios |
| an invisibility of | Whippoorwills |
| a seek of | Whippoorwills |
| a ring of | White-eyes |
| a spectacle of | White-eyes |
| a herd of | Whooping cranes |
| a sedge of | Whooping cranes |
| a siege of | Whooping cranes |
| a bunch of | Widgeons |
| a coil of | Widgeons |
| a company of | Widgeons |
| a flight of | Widgeons |
| a knob of | Widgeons |
| a little knob of | Widgeons |
| a lute of | Widgeons |
| a raft of | Widgeons |
| a scry of | Widgeons |
| a smidgen of | Widgeons |
| a sord of | Widgeons |
| a sute of | Widgeons |
| a trip of | Widgeons |
| a hair club of (American) | Widgeons |
| a flight of | Wild birds |
| a bunch of | Wildfowl |
| a knob of | Wildfowl |
| a little knob of | Wildfowl |
| a plump of | Wildfowl |
| a skein of | Wildfowl |
| a scry of | Wildfowl |
| a sord of | Wildfowl |
| a sute of | Wildfowl |
| a trip of | Wildfowl |
| a wedge of | Wildfowl |
| a cord of | Woodcocks |
| a covert of | Woodcocks |
| a covey of | Woodcocks |
| a fall of | Woodcocks |
| a flight of | Woodcocks |
| a flock of | Woodcocks |
| a plump of | Woodcocks |
| a rush of | Woodcocks |
| a roding of (Eurasian) | Woodcocks |
| a discomfiture of | Wood duck |
| a cord of | Woodpeckers |
| a descant of | Woodpeckers |
| a descension of | Woodpeckers |
| a drumming of | Woodpeckers |
| a gatling of | Woodpeckers |
| a bushel of (acorn) | Woodpeckers |
| a scaffold of (latterbacked) | Woodpeckers |
| a crown of (Pileated) | Woodpeckers |
| a chime of | Wrens |
| a flight of | Wrens |
| a flock of | Wrens |
| a herd of | Wrens |
| a herde of | Wrens |
| a family of (winter) | Wrens |