Green Sandpiper Identification Guide

Key Field Marks

• Size and shape: A medium-small, stocky sandpiper about 8.5–9.5 inches long, with a relatively short neck, medium-length dark greenish legs, and a straight, medium-length dark bill.
• Plumage: Very dark, blackish-olive upperparts finely spotted with white, contrasting sharply with clean white underparts; in flight shows a striking, contrasting white rump and blackish underwings, a key identification feature.
• Bill and legs: Straight, dark bill; dull greenish legs, shorter and less brightly colored than those of the similar Wood Sandpiper.
• Behavior: Typically solitary or in loose small groups, feeding along muddy edges with a bobbing, teetering gait; flushes abruptly with a towering, zigzagging flight and loud call, recalling a snipe.

Separating It From Similar Species

• Wood Sandpiper: Paler and more delicately marked above, with a more finely spotted brown back, longer yellowish-green legs, less contrasting rump-to-back pattern, and paler underwings in flight; Wood Sandpiper is also generally less shy and flushes with a different, more disyllabic call.
• Common Sandpiper: Smaller, browner, lacks the bright white rump, and has a distinctive stiff-winged, flickering flight low over water, plus a constant bobbing tail.
• Solitary Sandpiper (in the Americas, a close ecological counterpart): Very similar in habits, but Green Sandpiper does not normally occur in the New World; where relevant, Solitary Sandpiper shows a barred rather than solid white outer tail and different underwing pattern.
• The strong contrast between the very dark upperparts/underwings and the bright white rump is the single best mark for Green Sandpiper in flight.

Where and When to See It

• Habitat: Small freshwater pools, ditches, flooded fields, sewage works, and wooded stream margins; often uses surprisingly small, overgrown, or shaded water bodies that other shorebirds avoid.
• Range: Breeds across northern Europe and Asia in boggy forest and taiga; winters from southern Europe and Africa across the Middle East and South Asia.
• Season: A passage migrant and winter visitor across much of its non-breeding range, with breeding confined to the far north in summer.

Voice and Song Cues

• The flushing call is a loud, ringing, three- or four-note "tlui-wit-wit" or "weet-a-weet", often the first and only clue to its presence as it towers away.
• Generally quieter and more retiring than many other shorebirds when undisturbed, often going unnoticed until flushed.