Reading ringed gulls in Leiden – 20171204

Wintering Black-headed Gulls in Leiden, the Netherlands, 4 December 2017.

White E0WH

Ringed in Leiden, December 2016 as an adult.

W-E0WH-20171204

White 4-5

Ringed in Leiden, November 2017 as older than 2nd calendar year.

W-45-20171204

White Z-5

Ringed in Groningen, November 2015 as a first-calendar year and a regular visitor to Leiden.W-Z5-20171204

Black S-2

Ringed in Leiden, November 2017 as a 2nd-calendar year.N-S2-20171204

Yellow 2JXJ

Ringed at the Pitsea landfill site, United Kingdom, February 2015 as an adult.

Y-2JXJ-20171204

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