Where’s Wildlife · Bird Field Guide

Semipalmated Sandpiper

Calidris pusilla

Pronounced (approx.): KAL-ih-dris poo-SIL-uh

A small migrating shorebird with dark legs and a fairly short, stout bill. [1]

Select the main image to browse all 3 photographs.

NATIVE TO NORTH AMERICA

At a Glance

Family
Scolopacidae · sandpipers
Size
Very small shorebird
Habitat
Mudflats, shallow wetland edges, and tundra
Food
Small aquatic invertebrates
Nesting
Ground nest on tundra

Compare several field marks together. [1] [2]

Three identification clues

01 · FIELD MARK

Dark legs contrast with the yellowish legs of Least Sandpipers. [1]

02 · FIELD MARK

The bill is usually short, straight, and relatively stout. [1]

03 · FIELD MARK

Gray-brown upperparts and a pale underside produce a subdued overall pattern. [1]

Finding Semipalmated Sandpiper

Search open muddy margins during migration. Mixed flocks provide useful size comparisons, but identify each bird separately. [1]

Use the range map for seasonal context and the observation map to explore reported sightings near you.

Learn the songs and calls

Listen for rhythm and tone, then compare what you hear with the bird’s appearance and habitat.

Common look-alikes

Least Sandpipers are warmer brown and usually yellow-legged. Western Sandpipers may have a longer, more drooping bill; difficult individuals deserve several views. [1]

Field Photographs

Photographs © Brian Woolman / Where’s Wildlife. Select any image to open the gallery.

How this bird lives

These sandpipers breed in northern tundra and stop at productive wetlands along migration routes. They pick small prey from mud and shallow water, building energy reserves for the next flight. [2]

A closer look at Semipalmated Sandpiper

Partly webbed toes

The common name refers to small webs between some toes. [2]

Migration gatherings

Many birds may feed together at a good stopover site. [2]

Careful comparisons

Bill shape, leg color, and proportions work better together than any one mark. [2]

Range & Sightings

Explore reported observations and photographs on iNaturalist. Zoom to your area and use date filters to investigate seasonal sightings.

Reported sightings are not a complete range map. A lack of records does not necessarily mean the species is absent.

Keep Learning

Choose a photograph and name three clues you can see. Compare another view to learn how angle, age, season, and lighting change the bird’s appearance.

Sources & Further Reading

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