Colimbo Grande vs Paíño Boreal

The Great Northern Diver is a large, robust waterbird, while Leach's Storm-Petrel is a small, delicate seabird. Key differences include size, habitat preference, and flight style. These species are unlikely to be confused in the field due to their distinct appearances and behaviors.

Size and habitat: Look for the large size and freshwater or coastal habitat of the Great Northern Diver versus the small size and oceanic habitat of Leach's Storm-Petrel. Flight style: Observe the diver's powerful, direct flight compared to the petrel's light, fluttering flight over the sea.

The Great Northern Diver is significantly larger than Leach's Storm-Petrel, with a robust body and long neck compared to the petrel's small, slender form.

The Great Northern Diver has a striking black-and-white plumage during breeding season, while Leach's Storm-Petrel is generally dark with a paler rump.

The Great Northern Diver is a diving bird, often seen on lakes or coastal waters, whereas Leach's Storm-Petrel is a pelagic species, known for its fluttering flight over open ocean.

The Great Northern Diver is found on freshwater lakes and coastal areas, while Leach's Storm-Petrel is typically seen far from land over the open ocean.