Newell's Shearwater vs Black-vented Shearwater

In short

Newell's Shearwater and Black-vented Shearwater can be challenging to distinguish at sea. Newell's Shearwater has a more contrasting black-and-white plumage and a distinct flight style with rapid wing beats. Black-vented Shearwater tends to have a more uniform dark upper side and a less contrasting underwing.

Identification tips

1. Look for the more contrasting black-and-white plumage of Newell's Shearwater. 2. Observe the flight style: Newell's has rapid wing beats with little gliding. 3. Consider the location: Newell's is more likely in tropical waters near Hawaii, while Black-vented is coastal along the Pacific coast of North America.

Size

Both species are similar in size, but Black-vented Shearwater may appear slightly bulkier.

Plumage

Newell's Shearwater shows a more contrasting black-and-white plumage with a sharp demarcation between the dark upperparts and white underparts. Black-vented Shearwater has a more uniform dark upper side and less contrasting underwing pattern.

Behaviour

Newell's Shearwater exhibits rapid wing beats with little gliding, while Black-vented Shearwater may show more gliding in its flight.

Habitat

Newell's Shearwater is highly pelagic, often found in tropical and subtropical waters around the Hawaiian Islands. Black-vented Shearwater is more coastal, often seen near the Pacific coast of North America.