painho-de-barriga-preta vs painho-de-cauda-furcada

The Black-bellied Storm-Petrel is distinguished by its bold black central belly stripe and longer legs that project beyond the tail in flight. Leach's Storm-Petrel lacks this belly stripe and has a more uniform dark appearance with a forked tail.

Look for the bold black central belly stripe on the Black-bellied Storm-Petrel. Check for longer legs projecting beyond the tail in flight. Note the habitat: colder waters suggest Black-bellied Storm-Petrel.

Black-bellied Storm-Petrel shows a bold black central belly stripe and darker upperparts, while Leach's Storm-Petrel has a more uniform dark plumage without the belly stripe.

Black-bellied Storm-Petrel prefers colder, sub-Antarctic waters, whereas Leach's Storm-Petrel is typically found in more temperate zones.