Willet

Overview

The Willet is a large, sturdy shorebird that appears rather plain gray-brown while standing but becomes strikingly patterned in flight, when a broad white stripe cuts across otherwise black flight feathers. This dramatic wing pattern is one of the most distinctive in-flight field marks among North American shorebirds. Stout, straight bills and blue-gray legs complete its solid, robust profile.

Two subspecies groups, eastern and western, differ subtly in size, coloration, and habitat preference, with eastern birds favoring coastal marshes and western birds more associated with prairie wetlands during breeding.

Feather Identification

• In-flight wing pattern: A bold, broad white band crosses the black primaries and secondaries, creating a striking black-and-white flash unique among large North American sandpipers.
• Folded wing/body: Appears plain grayish-brown with light mottling, showing little of the dramatic pattern visible only when the wings are spread.
• Underparts: Grayish-white, with light barring in breeding plumage that becomes plain gray-white in winter.
• Bill and legs: Bill is straight, thick, and gray-black; legs are bluish-gray, both fairly heavy compared to other Tringa sandpipers.
• Compared to similar species: Its bold black-and-white flight pattern is unmatched by other yellowlegs or redshanks, making the species instantly identifiable in flight despite its otherwise plain resting appearance.

Plumage Notes

Breeding adults show light barring and mottling on the underparts and back, fading to a much plainer, paler gray-brown non-breeding plumage. Eastern subspecies tend to be darker and more heavily marked than western birds, which are paler overall. Sexes look alike. Juveniles resemble non-breeding adults but with buffier fringes on the back and covert feathers.

Habitat & Range

Willets breed along Atlantic and Gulf coast salt marshes (eastern populations) and interior prairie wetlands of the western United States and Canada (western populations). They winter along coastlines from the southern United States through Central and South America, favoring beaches, mudflats, and salt marshes.

Behavior & Field Notes

This species forages by probing mud and sand for invertebrates, sometimes wading into deeper water to catch small fish or crabs along coastal habitats. It is notably vocal and aggressive near the nest, giving a loud, ringing "pill-will-willet" call that gives the species its name. Nesting occurs on the ground in marsh vegetation or open prairie grassland depending on subspecies.