The Bewick’s Tundra Swan is smaller than the Mute Swan.

The Bewick’s Tundra Swan has a more rounded head shape than the Mute Swan.

The Bewick’t Tundra Swan has a yellow eye-ring and the yellow of its beak extends to the forehead.

The Mute Swan has black towards it eyes and the black of its beak extends to the forehead.

Bewick’s Tundra Swan (left) and Mute Swan (right)

The Bewick’s Tundra Swan has grey legs and the Mute Swan has black legs.

The Bewick’s Tundra Swan is migratory.

The Mute Swan is not migratory.

Photographer: Martina Nicolls

Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM