Images of European Herring Gull Larus argentatus argenteus, ringed as Green YBDS in July 2012 as a pullus in the gull colony of IJmuiden (Forteiland), the Netherlands.
All images were taken in IJmuiden Harbour, the Netherlands.
22 September 2013
14 September 2014
12 July 2015
For more images of YBDS, including as a 1st-calendar year, see Gull-Research.org.