Great Knot vs Ruff

In short

The Great Knot and Ruff are both medium-sized shorebirds, but they can be distinguished by their structure and plumage. The Great Knot has a longer, slightly down-curved bill and a more uniform, scaly appearance in non-breeding plumage. In contrast, the Ruff is notable for its variable plumage and distinctive breeding plumage in males, as well as its shorter, straight bill.

Identification tips

1. Bill Shape: Great Knot has a longer, slightly down-curved bill; Ruff has a shorter, straight bill. 2. Plumage: Look for the scaly gray pattern in Great Knots versus the variable and often mottled appearance of Ruffs. 3. Breeding Male Ruff: In breeding season, males have distinctive ruffs and tufts. 4. Behavior: Observe flocking behavior; Great Knots are more cohesive, while Ruffs may display lekking. 5. Habitat: Note the habitat; Ruffs are more often in freshwater environments.

Size

The Great Knot is generally more robust and slightly larger than the Ruff.

Plumage

In non-breeding plumage, the Great Knot has a scaly gray appearance with a more uniform pattern, while the Ruff shows more variation with mottled brown and buff tones. Breeding male Ruffs are unmistakable with their elaborate ruffs and tufts, which are absent in Great Knots.

Behaviour

Ruffs often display lekking behavior during the breeding season, which is not observed in Great Knots. Great Knots are more likely to be seen in large, cohesive flocks.

Habitat

Both species can be found in similar coastal and wetland habitats, but Ruffs are more likely to be found in freshwater marshes and wet meadows during migration and winter.

Voice

Vocalizations are not a primary distinguishing feature, but Ruffs may be heard making a low 'ruff' call, while Great Knots are generally quieter.