| Gulls | Legring : one, coded. | Eurasian Mew Gull | Dark Blue [B] | Four alpha-numeric code (4 letters/numbers). | 5 |  |  | 
          
                  | Gulls | Legring : one, coded. | Glaucous Gull | Dark Green [G] |  |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Light Green (Lime) [L] | Four alpha-numeric code (4 letters/numbers). |  | :C |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Black (Niger) [N] | Four alpha-numeric code (4 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Eurasian Mew Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Ring-billed Gull | Dark Blue [B] | Four alpha-numeric code (4 letters/numbers). | 5 |  |  | 
          
                  | Gulls | Legring : one, coded. | Ring-billed Gull | Red [R] | Three alpha-numeric code (3 letters/numbers). | Y |  |  | 
          
                  | Gulls | Legrings : combination of uncoded. | Great Black-backed Gull |  |  |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). | A: |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Little Gull | Red [R] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | J |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | White [W] | Five alpha-numeric code (5 letters/numbers). | J |  |  | 
          
                  | Gulls | Legring : one, coded. | Ring-billed Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). | P |  |  | 
          
                  | Gulls | Legring : one, coded. | Little Gull | White [W] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). |  | :C | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). |  | :C | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Black-legged Kittiwake | White [W] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Yellow [Y] | Three numeric code (3 numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | Dark Green [G] | One alpha-numeric code (1 letter or number) |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Slender-billed Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Audouin's Gull | Dark Blue [B] | Four alpha code (4 letters). | F or C |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). | F: |  |  | 
          
                  | Gulls | Legring : one, coded. | Lesser Black-backed Gull | White [W] | Four alpha code (4 letters). | N: |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). | Y |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-legged Kittiwake | Yellow [Y] | Three alpha code (3 letters). |  |  | Tarsus left. |