- Calidris fuscicollis
15–18 cm (6-7 in)
- Dark brown upperparts
- White underparts
- Brown breast streaking
- White rump
- Streaked flanks
- White stripe supercilium
- Black legs
- Small thin dark bill with yellow base to lower mandible
- Wings extend beyond the tip of the tail
- Pale grey upperparts
Breeds in well vegetated marshy tundra. Forages in mud flats outside of the breeding season.
Their diet consists almost entirely of invertebrates, such as adult and larval insects, grasshoppers, beetles, craneflies, spiders. They also take some small molluscs and other crustaceans.
Polygynous. They nest on the ground.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved October 2018)
- BirdForum Opus contributors. (2023) White-rumped Sandpiper. In: BirdForum, the forum for wild birds and birding. Retrieved 7 December 2023 from https://www.birdforum.net/opus/White-rumped_Sandpiper
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