Green Sandpiper

The Green Sandpiper is a compact, dark-plumaged wader of the Tringa genus, widespread across Eurasia. Its blackish-olive upperparts are sparsely flecked with small pale spots, giving it a much darker, more uniform look than its close relative the Wood Sandpiper.

The underparts are clean white, with light streaking on the breast sides, and a short white eye-ring stands out on the dark face. The legs are dark greenish-gray and relatively short, and the bill is straight and blackish.

In flight the Green Sandpiper is unmistakable: a brilliant white rump contrasts sharply against blackish upperparts and dark, almost black underwings, recalling a large hirundine or a small House Martin in silhouette.

Key field marks

• Very dark, blackish-olive upperparts with sparse pale spotting
• Bold, contrasting white rump in flight
• Blackish (dark) underwings — a strong contrast with the white belly
• Short white eye-ring on an otherwise dark face
• Dark greenish-gray legs
• Loud, explosive "tluit-wit-wit" call given the instant it flushes

Similar species

• Wood Sandpiper: paler and more heavily spangled above, pale unbarred underwings, more prominent pale eyebrow, less contrasting rump.
• Solitary Sandpiper (its New World counterpart and closest relative): occurs in North America, has a dark rump rather than white, and also nests in trees.
• Common Sandpiper: browner, teeters constantly, shows a white wingstripe and a different, more level flight action low over water.

Habitat

Green Sandpipers favor small, often shaded freshwater habitats — woodland streams, ditches, farm ponds, and muddy pool margins — much like the ecologically similar Solitary Sandpiper of North America.

Range and migration

They breed across the taiga and boreal wetlands of northern Europe and Asia, and migrate to winter across southern Europe, Africa, and southern Asia, typically appearing as single birds or in very small, loose groups at favored inland wetlands.

Behavior

Green Sandpipers are wary and typically solitary, flushing suddenly and steeply when disturbed, calling loudly as they zigzag away — a behavior that often first alerts observers to their presence.

Voice

The flight call is a loud, ringing, liquid "tluit-wit-wit," one of the most distinctive sounds of small wetlands within its range.

Feeding

It picks and probes for insects, worms, and small crustaceans in shallow water and soft mud, often bobbing its rear end gently while foraging, much like its American relative the Solitary Sandpiper.

Nesting and breeding

Unusually for a wader, the Green Sandpiper nests off the ground, laying its eggs in old nests of thrushes, pigeons, or even squirrel dreys in trees near water — a strategy shared with the Solitary Sandpiper.