Great knot vs Ruff
The great knot is heavier: 192 g against 131.7 g for the ruff, about 46% more.
Photo: Original: tcager ; this edit: User:MPF · CC0 · Wikimedia Commons
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Photo: Wald1siedel · CC BY-SA 4.0 · Wikimedia Commons
What is the difference between a great knot and a ruff?
Each point below is worked out from a pair of recorded values.
- The great knot is heavier: 192 g against 131.7 g for the ruff, about 46% more.
- Both belong to the genus Calidris, so they are close relatives.
- The great knot is listed as Endangered on the IUCN Red List; the ruff is Least Concern.
Side by side
| Great knot | Ruff | |
|---|---|---|
| Scientific name | Calidris tenuirostris | Calidris pugnax |
| Family | Scolopacidae | Scolopacidae |
| Order | Charadriiformes | Charadriiformes |
| Weight | 156 g – 192 g | 102 g – 180 g |
| Length | Not recorded | Not recorded |
| Lifespan | Not recorded | 13.9 years |
| Main food | Not recorded | Not recorded |
| Habitat | grassland | wetland |
| Conservation status | Endangered | Least Concern |
| Countries recorded | 1 | Not recorded |
A scale drawing needs a recorded length for both animals; only weights are on record for this pair.
Full record: Great knotFull record: RuffCompare other animals