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, she still shows an orange bill and legs each year:
Black-headed Gull White E0TC in Leiden:
Herring Gull Arnhem 6169883 in Leiden:
Highlight of the day was seeing the returning Black-headed Gull with Norwegian ring up close in Katwijk: