| Gulls | Legring : one, coded. | Yellow-legged Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | X |  |  | 
          
                  | Gulls | Legring : one, coded. | Eurasian Mew Gull | Yellow [Y] | Three alpha code (3 letters). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | B: |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | X |  |  | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | X |  |  | 
          
                  | Gulls | Wingtag : coded. | Herring Gull | White [W] | Three alpha-numeric code (3 letters/numbers). | E |  |  | 
          
                  | Gulls | Wingtag : coded. | Caspian Gull | White [W] | Three alpha-numeric code (3 letters/numbers). | E |  |  | 
          
                  | Gulls | Wingtag : coded. | Yellow-legged Gull | White [W] | Three alpha-numeric code (3 letters/numbers). | E |  |  | 
          
                  | Gulls | Wingtag : coded. | Lesser Black-backed Gull | White [W] | Three alpha-numeric code (3 letters/numbers). | E |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | X |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Five alpha code (5 letters). | H |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Dark Blue [B] | Three alpha code (3 letters). |  |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Little Gull | Dark Blue [B] | Two numeric code (2 numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | T |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Dark Blue [B] | Three numeric code (3 numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Dark Green [G] | Two alpha code (2 letters). |  |  | Tibia left. | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | Yellow [Y] | Four alpha code (4 letters). | A |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Yellow [Y] | Three alpha-numeric code (3 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). |  | :C | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). |  | A | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Yellow [Y] | Three alpha-numeric code (3 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | P |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). |  |  |  |