Lesser Black-backed Gull vs Glaucous-winged Gull

In short

The Lesser Black-backed Gull and Glaucous-winged Gull can be distinguished primarily by their wing and back color. The Lesser Black-backed Gull has a darker slate-gray back and wings, while the Glaucous-winged Gull features a lighter gray plumage. Observing these differences in good lighting conditions will aid in accurate identification.

Identification tips

1. Look for the darker slate-gray back and wings of the Lesser Black-backed Gull compared to the lighter gray of the Glaucous-winged Gull. 2. Ensure good lighting to accurately assess the color differences.

Plumage

Lesser Black-backed Gull has a darker slate-gray back and wings, contrasting with the lighter gray of the Glaucous-winged Gull. This difference is most apparent in adult birds.