I just received this message from Roland-Jan Buijs, one of Holland’s top gull ringers:
Hereby I send you a picture of this year cohort tibia-rings on Larus fuscus and Larus argentatus.
We ringed about 800 juvenile Larus fuscus and 200 juvenile Larus argentatus with these rings.
The rings are green with white digits and a dote between the characters.
Birds are ringed at: Moerdijk, Hollands Diep, Haringvliet, Krammer-Volkerak, Markiezaat, Maasvlakte and Europoort.
Please feel free to put this picture on your blogs. I hope you will see lots of them the next years.
We also ringed one Great black-backed Gull with such an ring.
Cheers to you all and all the best from Holland.
Should you come across one of these gulls, please report it to Roland-Jan by e-mail RJBuis [at] buijsecoconsult.nl.
Please also visit his Web site: http://buijsecoconsult.blogspot.nl.