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Titlesort descending Colour-ring type Soort Colour-ring colour Colour-ring code First letter Last letter Colour-ring position
Gulls Legring : one, coded. Yellow-legged Gull Black (Niger) [N] Four alpha-numeric code (4 letters/numbers). F Tarsus left.
Gulls Legring : one, coded. Black-headed Gull White [W] Three alpha code (3 letters).
Gulls Legring : one, coded. Herring Gull Dark Blue [B] Four alpha-numeric code (4 letters/numbers). F Tarsus left.
Gulls Legring : one, coded. Black-legged Kittiwake Yellow [Y] Three alpha-numeric code (3 letters/numbers). X
Gulls Legring : one, coded. Black-headed Gull Red [R] Two numeric code (2 numbers). Tarsus left.
Gulls Legring : one, coded. Black-headed Gull Yellow [Y] Four alpha-numeric code (4 letters/numbers). W
Gulls Legring : one, coded. Black-headed Gull Yellow [Y] Four alpha code (4 letters). A
Gulls Legring : one, coded. Lesser Black-backed Gull Red [R] Four alpha-numeric code (4 letters/numbers). K
Gulls Legring : one, coded. Slender-billed Gull Red [R] Three alpha code (3 letters). Tarsus left.
Gulls Legring : one, coded. Slender-billed Gull Red [R] Three numeric code (3 numbers). Tarsus left.
Gulls Legring : one, coded. Slender-billed Gull Red [R] Three alpha-numeric code (3 letters/numbers). Tarsus left.
Gulls Legring : one, coded. Black-headed Gull Red [R] Four alpha code (4 letters). H
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

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