Buff-breasted Sandpiper vs Dunlin

In short

Buff-breasted Sandpipers and Dunlins can be distinguished by their structure and plumage. The Buff-breasted Sandpiper has a shorter, straighter bill and a more uniform buff coloration, while the Dunlin features a longer, slightly decurved bill and distinctive seasonal plumage changes.

Identification tips

1. Bill Shape: Buff-breasted Sandpipers have a short, straight bill; Dunlins have a longer, slightly decurved bill. 2. Plumage: Look for the Buff-breasted's uniform buff color versus the Dunlin's seasonal black belly patch and rufous back in breeding plumage. 3. Habitat: Consider the habitat; Buff-breasted Sandpipers are more likely in dry grasslands, while Dunlins are found in coastal areas. 4. Posture: Buff-breasted Sandpipers display a more upright stance compared to the Dunlin's more horizontal posture.

Size

Both species are similar in size, but the Dunlin is slightly larger and stockier.

Plumage

Buff-breasted Sandpipers have a uniform buff coloration with a scaly pattern on the back. Dunlins, in breeding plumage, have a black belly patch and rufous back, while in winter they are gray and nondescript.

Behaviour

Buff-breasted Sandpipers are often seen in dry grasslands and display a more upright posture. Dunlins are typically found in coastal and intertidal areas, often in large flocks.

Habitat

Buff-breasted Sandpipers prefer dry grasslands and open fields during migration. Dunlins are more tied to coastal and intertidal habitats, often seen in estuaries and mudflats.

Voice

Vocalizations are not a primary distinguishing feature in the field for these species.