little-W | Studying gulls:
Common Gull, adult right[blue, red], left[white]
little-W | Studying gulls:
Common Gull, adult W[EU99]
little-W | Studying gulls:
Common Gull, adult W[EU99]
little-W | Studying gulls:
Common Gull, adult W[EU99]
little-W | Studying gulls:
Common Gull, adult W[EU99]
little-W | Studying gulls:
Common Gull, adult W[EU99]
little-W | Studying gulls:
Primary pattern comparison in Dutch adult Common Gulls