Bewick's Swan vs Whooper Swan

Bewick's Swan and Whooper Swan can be distinguished by their bill patterns and size. Bewick's Swan has a shorter neck and a more rounded head, while Whooper Swan is larger with a longer neck and a more angular head.

1. Bill pattern: Look for the extent of yellow on the bill; Bewick's has less yellow. 2. Size and structure: Note the longer neck and larger size of the Whooper Swan. 3. Vocalization: Listen for the louder trumpeting of the Whooper Swan. 4. Habitat: Consider the habitat, especially during migration and wintering.

Whooper Swan is larger and heavier than Bewick's Swan, with a longer neck and body.

Both species are predominantly white, but the key difference lies in the bill pattern: Bewick's Swan has a bill with more black and a smaller yellow patch, while Whooper Swan has a larger yellow patch extending further down the bill.

Both species are often seen in flocks, especially during migration and wintering. No significant behavioral differences are noted in the field.

Bewick's Swan is often found in tundra and wetland areas during breeding, while Whooper Swan prefers larger bodies of water and open fields during winter.

Whooper Swan has a loud, trumpeting call, while Bewick's Swan has a softer, more musical call.