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Ruff

Calidris pugnax | Kemphaan | Combatiente

No European wader is as variable as the Ruff: in spring the males wear extravagant ruffs in white, black, rust or purple. Outside display they are dull, long-legged, small-headed birds with a distinctly humped back.

Ruff (Calidris pugnax)
Photo: Wald1siedel — CC BY-SA 4.0 · Wikimedia Commons

Voice

One of the quietest of waders. On the lek the males are almost entirely silent, offering little more than grunting and wing clatter. In flight an occasional low, grunting ook or kru, far more muffled than a Redshank and easily missed in a mixed flock.

No freely licensed recording is available for this species yet.

Identification

Small head, short slightly drooping bill and a hunched, rounded back on orange, yellow or grey-green legs. In flight a narrow white wingbar and, diagnostically, two oval white patches either side of the dark tail base. Spring males carry individually unique ruffs and head tufts and a warty yellow or orange face. Females are much smaller, roughly a third lighter, and scaly grey-brown.

Confusion species

Females and juveniles resemble other medium waders, but the small head, short bill and curved back give the bird the look of a miniature Redshank in poor light. Juveniles are warm buff on the breast with a neatly scaled mantle. The white ovals beside the tail and the weak wingbar settle it as the bird lifts.

Habitat

Damp extensive grassland, flooded meadows, muddy pool edges, saltmarsh and rice fields. Breeds on wet tundra and in northern marshy grassland. On passage in the Netherlands it favours clayey, shallowly flooded polders and muddy margins, where flocks walk slowly and pick as they go.

Range and movements

Breeds from the Netherlands and Scandinavia east across the Siberian tundra, with the great majority wintering in the Sahel. As a Dutch breeder it has all but gone, yet thousands pass through the wet polders in March and April. In Spain large numbers winter in the rice fields of the Ebro delta, the Albufera and the marismas of Doñana.

  • Resident
  • Breeding (summer)
  • Winter
  • Passage
  • Migration direction
  • dark = core range, pale = thinly spread
Density map from the occurrence records of GBIF (2024-08-01 – 2026-07-31), counted per 0.7° grid cell and per month and divided by all bird records in that same cell — so the number of birdwatchers does not shape the picture. Colour depth follows that share and fades out gradually, so the map does not follow national borders. Country outlines: Natural Earth (public domain).

Where and when to look

Visit a shallowly flooded field in the peat meadow district in the first half of April and be there at sunrise, when the males gather at the lek and the ruffs are at their best. Later in the morning the birds scatter over the grassland and disappear into the sward.

Conservation status

As a breeder in western Europe it has virtually vanished through drainage, early mowing and the loss of herb-rich wet grassland; at most a handful of Dutch pairs remain. The Siberian population is still large, but numbers along the flyway are falling too, helped by hunting and by drought in the Sahel.