European Storm-Petrel vs Band-rumped Storm-Petrel

In short

The European Storm-Petrel and Band-rumped Storm-Petrel are both small, dark seabirds often seen far out at sea. The European Storm-Petrel is generally smaller and more delicate, while the Band-rumped Storm-Petrel is slightly larger with a more robust appearance. Flight patterns and tail shape are key distinguishing features.

Identification tips

1. Tail shape: European Storm-Petrel has a square tail, while Band-rumped Storm-Petrel often shows a notched tail. 2. Flight pattern: European Storm-Petrel has a fluttering flight, whereas Band-rumped Storm-Petrel exhibits more powerful, direct wingbeats. 3. Size and structure: European Storm-Petrel is smaller and more delicate; Band-rumped Storm-Petrel is slightly larger and more robust. 4. Plumage: Look for lighter underparts on Band-rumped Storm-Petrel, though this can be subtle.

Size

The European Storm-Petrel is smaller and more delicate compared to the slightly larger and more robust Band-rumped Storm-Petrel.

Plumage

Both species have dark plumage, but the Band-rumped Storm-Petrel may show lighter underparts. Tail shape is a more reliable feature, with the European Storm-Petrel having a square tail and the Band-rumped Storm-Petrel often showing a notched tail.

Behaviour

Both species feed by seizing prey from the ocean surface and are often seen at sea. The Band-rumped Storm-Petrel tends to fly with more powerful, direct wingbeats compared to the fluttering flight of the European Storm-Petrel.

Habitat

Both species are pelagic, spending most of their time far out at sea and breeding on remote islands. They are often difficult to observe due to their remote habitats.

Voice

Vocalizations are not typically used for field identification at sea, and both species are more often heard at their breeding colonies.