| Gulls | Legring : one, coded. | Eurasian Mew Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | P |  |  | 
          
                  | Gulls | Legring : one, coded. | Great Black-backed Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). |  | :M |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | J |  |  | 
          
                  | Gulls | Legrings : combination of coded. | Black-headed Gull | White [W] | One alpha code (1 letter). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Audouin's Gull | Yellow [Y] | Two alpha-numeric code (2 letters/numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Audouin's Gull | Yellow [Y] | Two numeric code (2 numbers). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | E |  |  | 
          
                  | Gulls | Legring : one, coded. | Mediterranean Gull | White [W] | Four numeric code (4 numbers). | 3 |  |  | 
          
                  | Gulls | Legring : one, coded. | Yellow-legged Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | R: |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Little Gull | Black (Niger) [N] | Three alpha-numeric code (3 letters/numbers). | J |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Four alpha code (4 letters). | H |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Red [R] | Four alpha-numeric code (4 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | H |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Four alpha-numeric code (4 letters/numbers). |  | T |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). |  |  | Tarsus left. | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Yellow [Y] | Four alpha-numeric code (4 letters/numbers). | C |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Two alpha code (2 letters). |  |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Black-legged Kittiwake | Orange [O] | Two alpha code (2 letters). |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Black-headed Gull | White [W] | Four alpha-numeric code (4 letters/numbers). | B |  |  | 
          
                  | Gulls | Legring : one, coded. | Caspian Gull | Dark Green [G] | Four alpha-numeric code (4 letters/numbers). | R: |  | Tarsus right. | 
          
                  | Gulls | Legrings : combination of coded. | Black-headed Gull | Red [R] |  |  |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | White [W] | Three alpha-numeric code (3 letters/numbers). |  |  | Tarsus right. | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | Orange [O] | Five alpha-numeric code (5 letters/numbers). | K |  |  | 
          
                  | Gulls | Legring : one, coded. | Herring Gull | White [W] | Five alpha-numeric code (5 letters/numbers). | C |  |  |