Images taken during a brief visit to the gull colony of IJmuiden Forteiland, the Netherlands, on March 15, 2019, as part of our research project.
The Lesser Black-backed Gulls are already outnumbering the Herring Gulls, but many still have to return.
Green YBAM and Green YCPL
(Presumed) Hybrid Lesser Black-backed Gull x Yellow Legged Gull Green YBAM was back in its territory together with its female partner Lesser Black-backed Gull Green YCPL.
Herring Gull YCBC was also present, but there was no sign yet of its Lesser Black-backed partner.
It was great to see Lesser Black-backed Gull Red RWN back in the colony again.
The last time I saw her was in January at the landfill of El Jadida in Morocco: