| Gulls | Legring : one, coded. | Iceland Gull | Black (Niger) [N] | Four alpha code (4 letters). | G. |  |  | 
          
                  | Gulls | Legring : one, coded. | Little Gull | Yellow [Y] | Two numeric code (2 numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). |  | :B |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Red [R] | Three alpha-numeric code (3 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | White [W] | Five alpha-numeric code (5 letters/numbers). | J |  |  | 
          
                  | Gulls | Legring : one, coded. | Audouin's Gull | White [W] | Three alpha-numeric code (3 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Dark Blue [B] | Three alpha code (3 letters). | Z |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | P: |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | M: |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Black (Niger) [N] | Five alpha-numeric code (5 letters/numbers). | J |  |  | 
          
                  | Gulls | Legring : one, coded. | Glaucous Gull | Black (Niger) [N] | Four alpha code (4 letters). | G. |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Dark Green [G] | Four alpha code (4 letters). | Y |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Dark Blue [B] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Pale Blue [P] | Two alpha-numeric code (2 letters/numbers). |  |  | Tibia right. | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | T |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | White [W] | Four alpha-numeric code (4 letters/numbers). |  | :U | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). | 4: |  | Tarsus right. | 
          
                  | Gulls | Legring : one, uncoded. | Herring Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). | 2: or 3: |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Yellow [Y] | Four alpha code (4 letters). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Yellow [Y] | Four alpha code (4 letters). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Iceland Gull | Yellow [Y] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Glaucous Gull | Dark Blue [B] | Two alpha code (2 letters). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | N |  |  |