Band-rumped Storm-Petrel vs Matsudaira's Storm-Petrel

In short

Band-rumped Storm-Petrel and Matsudaira's Storm-Petrel are both medium-sized storm-petrels with similar dark plumage and flight patterns, making them challenging to differentiate at sea. Key differences include the Matsudaira's Storm-Petrel's slightly larger size and more prominent white rump patch.

Identification tips

1. Look for the more prominent white rump patch on Matsudaira's Storm-Petrel. 2. Consider the slightly larger size of Matsudaira's Storm-Petrel. 3. Note the location: Band-rumped Storm-Petrels are more associated with Northern Hemisphere breeding islands.

Size

Matsudaira's Storm-Petrel is slightly larger than the Band-rumped Storm-Petrel.

Plumage

Both species have dark plumage, but Matsudaira's Storm-Petrel typically shows a more distinct white rump patch compared to the often less conspicuous rump of the Band-rumped Storm-Petrel.

Behaviour

Both species exhibit similar flight behavior, characterized by erratic, fluttering flight patterns typical of storm-petrels.

Habitat

Both species are pelagic, spending most of their time far out at sea, but Band-rumped Storm-Petrels are more likely to be seen near breeding islands in the Northern Hemisphere.