Manx Shearwater vs Yelkouan Shearwater

In short

The Manx Shearwater and Yelkouan Shearwater are both small, black-and-white seabirds, but they can be distinguished by subtle differences in structure and plumage. The Manx Shearwater has a more contrasting black-and-white appearance, while the Yelkouan Shearwater tends to have a more muted, brownish tone. Observing their flight style and habitat can also aid in identification.

Identification tips

1. Plumage contrast: Look for the sharp black-and-white contrast in Manx Shearwater. 2. Location: Consider the geographic location; Yelkouan is more Mediterranean. 3. Flight style: Observe the flight; Manx Shearwaters have a more direct flight with stiff wingbeats. 4. Vocalizations: Listen for the Manx's distinctive calls at night near colonies.

Size

Both species are similar in size, but the Yelkouan Shearwater may appear slightly more slender.

Plumage

The Manx Shearwater has a stark black-and-white contrast with a clean white underbody and dark upperparts. In contrast, the Yelkouan Shearwater often shows a browner tone on the upperparts and less contrast between the upper and underparts.

Behaviour

Both species exhibit similar foraging behaviors, often seen flying low over the water and diving for fish. The Manx Shearwater is known for its long migrations.

Habitat

Manx Shearwaters are typically found in the North Atlantic, while Yelkouan Shearwaters are more common in the Mediterranean region. Overlap may occur during migration.

Voice

The Manx Shearwater is known for its eerie, nocturnal calls at breeding colonies, while the Yelkouan Shearwater's vocalizations are less well-documented but generally similar.