Leach's Storm-Petrel vs Manx Shearwater

In short

Leach's Storm-Petrel and Manx Shearwater are both seabirds but differ significantly in size and flight style. Leach's Storm-Petrel is smaller and exhibits a fluttering flight, while Manx Shearwater is larger with a more direct, gliding flight pattern.

Identification tips

1. Size and Flight: Note the smaller size and fluttering flight of Leach's Storm-Petrel compared to the larger, gliding Manx Shearwater. 2. Plumage: Look for the white rump on Leach's Storm-Petrel versus the stark black-and-white contrast of Manx Shearwater. 3. Habitat: Consider the distance from shore; Manx Shearwater may be closer to land during breeding season. 4. Vocalizations: Listen for calls near breeding colonies; Manx Shearwater is more vocal.

Size

Leach's Storm-Petrel is smaller, about the size of a sparrow, whereas Manx Shearwater is larger, comparable to a pigeon.

Plumage

Leach's Storm-Petrel has a dark brown plumage with a distinctive white rump patch, while Manx Shearwater is black above and white below, with a sharp contrast between the dark upperparts and white underparts.

Behaviour

Leach's Storm-Petrel often hovers and flutters over the water, while Manx Shearwater is known for its strong, direct flight and frequent gliding.

Habitat

Both species are pelagic but Manx Shearwater is more likely to be seen closer to shore during breeding season, while Leach's Storm-Petrel is typically found further offshore.

Voice

Leach's Storm-Petrel is generally silent at sea, while Manx Shearwater can be heard making a variety of calls, especially at night near breeding colonies.