Purple Sandpiper vs Arctic Skua

In short

The Purple Sandpiper and Arctic Skua are distinct in both appearance and behavior. The Purple Sandpiper is a small, stocky shorebird with a faint purple sheen in winter plumage, while the Arctic Skua is a larger seabird with variable plumage morphs. Observing their habitat and behavior can also help in distinguishing them.

Identification tips

1. Size and Shape: Note the smaller, stockier build of the Purple Sandpiper versus the larger, more streamlined Arctic Skua. 2. Plumage: Look for the purple sheen on the Purple Sandpiper in winter, and the variable morphs of the Arctic Skua. 3. Behavior: Observe the Purple Sandpiper's foraging on rocky shores versus the Arctic Skua's aerial pursuits and kleptoparasitic behavior. 4. Habitat: Consider the habitat; rocky shores for Purple Sandpiper, open seas and tundra for Arctic Skua.

Size

The Purple Sandpiper is much smaller and more compact compared to the larger, more robust Arctic Skua.

Plumage

Purple Sandpipers have slate to charcoal upperparts with a faint purple sheen in winter, and more colorful chestnut and buff highlights in summer. In contrast, Arctic Skuas exhibit two main morphs: dark and light, with intermediate variations, making their plumage more variable.

Behaviour

Purple Sandpipers are often seen foraging along rocky shorelines and are approachable, flying short distances when flushed. Arctic Skuas are known for their kleptoparasitic behavior, chasing other seabirds to steal food, and are more often seen in flight over open water.

Habitat

Purple Sandpipers are typically found along rocky coastlines and intertidal zones, especially in winter. Arctic Skuas inhabit open seas and coastal areas, often nesting in tundra regions.