Images taken during a visit to the gull colony of IJmuiden, the Netherlands, 24 April 2017.
The colony is now full of breeding pairs and the first eggs have been laid.
Lesser Black-backed Gulls
Ringed in Guernsey, UK as a sub-adult in 2012, male Black 5AM6 has returned to the colony for the third season in a row but this seems to be the first season that it is actively breeding.
Ringed in Suffolk, UK as a pullus in 2005, female Red RWN has been a regular breeder since 2010 and is back for another season.
White N0M2 is one of three Spanish-ringed Lesser Black-backed Gulls in the colony.
Male Green YAAA was one of the very first gulls to be ringed for this project back in 2008.
Now 25-years old, male Green YAUC is still actively breeding.