Lesser Yellowlegs

Overview

The Lesser Yellowlegs is a slender wader closely resembling the larger Greater Yellowlegs, sharing bright yellow legs and gray-brown, white-spotted upperparts. Its bill is notably shorter, thinner, and perfectly straight, giving it a daintier profile overall. It tends to be less wary than its larger relative and often forms sizable feeding flocks.

Both yellowlegs species are common sights on shallow wetlands during migration, requiring careful attention to bill proportions for confident separation.

Feather Identification

• Upperparts: Gray-brown feathers finely spotted and edged with white, similar in pattern to the Greater Yellowlegs but on a smaller frame.
• Underparts (breeding): Light streaking on the neck and upper breast, fading to white on the belly, generally less heavily marked than the Greater Yellowlegs.
• Bill: Short, thin, and perfectly straight, roughly equal to the length of the head, lacking the slight upturn and heaviness of the Greater Yellowlegs' bill.
• Legs: Bright yellow and slender, proportionally as long as in the Greater Yellowlegs relative to overall smaller body size.
• Compared to similar species: Best distinguished from the Greater Yellowlegs by its shorter, straighter, thinner bill and generally daintier build and call.

Plumage Notes

Breeding adults show light dark streaking on the neck and breast with spotted gray-brown upperparts; non-breeding plumage is plainer pale gray above and white below. Sexes look similar. Juveniles resemble non-breeding adults with slightly buffier fringes on the wing coverts through the fall migration period.

Habitat & Range

Lesser Yellowlegs breed in open boreal woodland clearings and muskeg across Alaska and Canada, migrating through the rest of North America to winter along coasts and wetlands from the southern United States through South America. It favors shallow wetlands, flooded fields, and mudflats, often in larger, more sociable flocks than the Greater Yellowlegs.

Behavior & Field Notes

This species forages by walking steadily through shallow water, picking small invertebrates from the surface or just below it, less prone to the vigorous bill-sweeping seen in Greater Yellowlegs. Its call is a softer, lower one- or two-note "tew" compared to the louder three-note call of its larger relative. Nests are simple ground scrapes in open boreal habitat, often placed near a low shrub or hummock.