Pink-footed Shearwater vs Buller's Shearwater

In short

To distinguish Pink-footed Shearwater from Buller's Shearwater, focus on the underwing pattern and head coloration. Pink-footed Shearwater shows a more uniform grayish-brown head and a less contrasting underwing pattern, while Buller's Shearwater has a distinct white underwing with a sharp black border and a contrasting white face.

Identification tips

1. Underwing pattern: Look for the bold black border on Buller's Shearwater's white underwing. 2. Head coloration: Note the contrasting white face of Buller's Shearwater compared to the more uniform grayish-brown head of Pink-footed Shearwater. 3. Range: Consider the geographic location; Buller's Shearwater is more likely in the tropical Pacific, while Pink-footed Shearwater is often near South America.

Size

Both species are similar in size, but Pink-footed Shearwater is slightly bulkier with a heavier build.

Plumage

Pink-footed Shearwater has a grayish-brown head and a less contrasting underwing pattern. In contrast, Buller's Shearwater displays a striking white underwing with a bold black border and a white face that contrasts with its darker cap.

Behaviour

Both species associate with other seabirds and follow fishing vessels, but Buller's Shearwater may forage more frequently at night.

Habitat

Pink-footed Shearwater is typically found near the continental shelf and pelagic waters off the coast of South America, while Buller's Shearwater ranges across the tropical and subtropical Pacific Ocean, breeding in New Zealand and dispersing widely.