22CY Black-headed Gull White LYD – 20180128

Currently my oldest Black-headed Gull that is still alive: White LYD, now 21 years old.

Seen on 28 January 2018, Leiden, the Netherlands.

It was originally ringed with a metal ring in 1998 as a 2nd-calendar year in Groningen, the Netherlands, with the colour ring added in Leiden in 2007.

It is seen almost yearly Leiden, typically in late winter.

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