White-rumped Sandpiper vs Western Sandpiper

In short

The White-rumped Sandpiper and Western Sandpiper can be distinguished by their rump and bill features. The White-rumped Sandpiper has a distinctive white patch behind the rump, while the Western Sandpiper lacks this feature. The bill of the Western Sandpiper is shorter and slightly drooped compared to the longer, straighter bill of the White-rumped Sandpiper.

Identification tips

• Look for the white rump patch on the White-rumped Sandpiper in flight.
• Note the bill shape: Western Sandpiper has a shorter, slightly drooped bill.
• During breeding season, check for rufous tones on the Western Sandpiper's back and head.
• Observe flocking behavior: Western Sandpipers are often in larger groups.

Size

Both species are similar in size, but the White-rumped Sandpiper is slightly larger.

Plumage

The White-rumped Sandpiper has a white patch on the rump that is visible in flight, whereas the Western Sandpiper does not. The Western Sandpiper may show more rufous tones on the back and head during breeding season.

Behaviour

White-rumped Sandpipers often forage in small groups and may defend feeding territories, while Western Sandpipers are more likely to be seen in larger flocks.

Habitat

White-rumped Sandpipers are found in wet, hummock-tundra near marshy ponds during breeding, while Western Sandpipers breed in coastal tundra and migrate along coastal mudflats.

Voice

The White-rumped Sandpiper has a distinct call, which can be a helpful identification feature, though specific vocal differences are not detailed.