The Greater Yellowlegs (Tringa melanoleuca) is a medium-to-large shorebird in the family Scolopacidae, distinguished by its long, bright yellow legs, a dark, slightly upturned bill that is roughly 1.5 times the length of its head, and a white tail with thin black bars. It breeds in boreal bogs and coniferous forests in Canada and Alaska, and winters in coastal wetlands, tidal flats, and flooded rice fields across the Americas. Its call is harsher and louder than that of the similar but smaller Lesser Yellowlegs.
Learn to identify
Greater Yellowlegs in breeding plumage wading at Long Wharf, New Haven, Connecticut, in May.
Learning lesson · openly licensed photographs, labelled by BirdBot; labels checked against the cited sources and approved by AI
Long bill, slightly upturned: longer than the head, thicker at the base. Streaked neck and breast: dark brown streaks on white. Heavily marked belly: more heavily marked than breeding Lesser. Long yellow legs: bright yellow and long. Lesser Yellowlegs is very similar; its bill is shorter and thinner.
Voice is often the best clue between the two yellowlegs.
Sources: Audubon Guide to North American Birds: Greater Yellowlegs · Wikipedia: Greater yellowlegs (revision 1383427134)
Photo: Paul Danese, CC BY-SA 4.0, via Wikimedia Commons; labels added by BirdBot.
In the field, the primary challenge is separating the Greater Yellowlegs from the smaller Lesser Yellowlegs. While both share bright yellow legs, the Greater is noticeably larger and heavier (approx. 171 g vs. 81 g). Look for the longer, slightly upturned bill and the bold white rump and tail with thin black bars in flight. Plumage shifts seasonally: winter birds show pale heads with brown streaks, while breeding plumage features heavy black streaking on the head, neck, and chest. Males, females, and juveniles are visually similar, so size and bill shape are your most reliable visual cues.
The Greater Yellowlegs occupies distinct habitats during its annual cycle. Breeding grounds are located throughout the boreal zone, specifically in wet bogs with small islands and coniferous forests with many clearings. These areas are typically covered in mosses and lichens, with small lakes, ponds, and trees available for perching. Subarctic tundra and subalpine scrub may also serve as breeding sites.
During the wintering season, the species utilizes a variety of wetland habitats, both freshwater and saline. Along coasts, they are often found on shallow lagoons and tidal flats, roosting on offshore rocks or reefs when feeding habitats are tidal. Inland, particularly in the southern United States and into South America, they use flooded rice fields. According to AviList v2026, the species breeds in taiga muskeg from southern Alaska eastward through the southern tier of Canadian provinces to eastern Labrador, and winters in wetlands of the southern USA and throughout the Caribbean southward to Tierra del Fuego.
Greater Yellowlegs are generally solitary but migrate in tight, low-flying groups, often associating with larger flocks of warblers, other shorebirds, and herons. They are among the first shorebirds to arrive at their wintering grounds in the spring. On the ground, they exhibit a distinctive high-stepping gait, occasionally running with their necks extended. They are strong and swift flyers, with legs that extend beyond the tail in flight.
Foraging is active and occurs both day and night, a behavior attributed to limited feeding space and time due to tides. By day, they forage visually, while at night they rely on tactile feeding, a shift supported by their eye's high cone and low rod densities. They wade in shallow water, probing vegetation to dislodge hidden fish, and may run toward surface ripples with their bill open to plow the water. They also swim to cross deep water or avoid predators, and will feed while swimming.
The diet of the Greater Yellowlegs is diverse, consisting primarily of small aquatic and terrestrial invertebrates, small fish, frogs, seeds, and berries. They are opportunistic feeders, sometimes catching insects along the shore or snatching them out of the air. When consuming larger prey, such as fish, they swallow it whole, headfirst, and may drop and reposition the prey several times before swallowing. They drink by placing their bill in water and tipping their head backward.
The mating system is presumed to be monogamous. Courtship involves the male running in circles around the female and posing with quivering, up-held wings. The pair persists at least into the chick-rearing period, with evidence of joint care of the young. The species produces one brood per season, with a clutch size of 3 to 4 eggs. The incubation period is 23 days, and chicks fledge in 18 to 20 days. Young leave the nest within 24 hours of hatching and the vicinity of the nest within two days.
Nests are located on the ground, typically in a moss-covered hummock at the base of short coniferous trees. The nest structure is a simple scrape or depression in the moss, sometimes lined with leaves, and is generally shaded by shrubs and small trees. Eggs are ovate pyriform, with variable background colors ranging from smoky-gray to olive, and irregular brown spots.
When visual size cues are difficult to judge, the voice is often the most reliable field mark. The Greater Yellowlegs call is harsher, louder, and clearer than that of the Lesser Yellowlegs. Listen for the distinctive three-syllable flight call, where the third syllable is noticeably lower-pitched than the first two. This auditory signature is particularly useful for confirming identification during migration when birds are in tight, low-flying groups.
The Greater Yellowlegs is classified as Near Threatened (NT) in the AviList v2026 checklist. Historically, the species was an important game bird in the early 20th century, and hunting reduced its numbers until the introduction of the Migratory Bird Treaty Act in 1918. Since 1927, it has been fully protected in the United States and Canada under this act. The primary threat to the species is the loss of wetlands throughout its wintering range. While population numbers are thought to be stable, accurate data remains limited. Studies on contaminants such as DDE, PCBs, and heavy metals have found selenium to be the only metal of concern, with no significant population-level effects from the other compounds.
Target shallow wetlands, tidal flats, or flooded rice fields, particularly during migration or winter. Watch for the distinctive high-stepping gait as the bird wades through shallow water. Look for active foraging behaviors, such as probing aquatic vegetation to dislodge fish or running toward surface ripples with the bill open to "plow" the water. Since these birds are solitary and sensitive to disturbance, maintain a respectful distance to avoid disrupting their feeding or roosting. Listening for the harsh, three-syllable flight call can help confirm the ID when the bird is at a distance or in flight.
