Reading ringed gulls in Leiden and Katwijk – 20171117

Checking my local gull spots in Leiden and Katwijk, the Netherlands, today resulted in a nice list of 28 rings: 22 Black-headed Gulls and 6 Herring Gulls. Below are some of the photos that I was able to take. Black-headed Gull White EJA5 in Leiden: Black-headed Gull Arnhem 3659678 in Leiden. Now in her 4th-calendar, …

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