Gaviota de Cortés vs Gavión Atlántico

The Yellow-footed Gull and the Great Black-backed Gull can be distinguished primarily by their leg color and size. The Yellow-footed Gull has yellow legs, while the Great Black-backed Gull has pink legs. Additionally, the Great Black-backed Gull is generally larger and more robust.

Check leg color first: Yellow-footed Gull has yellow legs, Great Black-backed Gull has pink legs. Consider size: Great Black-backed Gull is larger and more robust.

The Great Black-backed Gull is larger and more robust compared to the Yellow-footed Gull.

The Yellow-footed Gull has yellow legs, whereas the Great Black-backed Gull has pink legs.