IJmuiden Project - Fred Cottaar, José Verbeek, Maarten van Kleinwee & Mars Muusse

(last update: January 01, 2023)

Lesser Black-backed Gull (graellsii) Y.AKU adult, September 2010 - March 2016, IJmuiden, the Netherlands. Picture: Jan Zorgdrager & Maarten van Kleinwee & Mars Muusse.

Ringed as breeding adult in season 2009 at Forteiland, IJmuiden. Ringed by Fred Cottaar ringing team.

July 22 2020 this bird was brought in to animal rescue centre "De Toevlucht". In Amsterdam - Geuzenveld it was picked up from the street where it was close to dying. It had severe internal problems and shit was really running out of the bird. Despite efforts to save it, it died pretty soon after it was brought in. In season 2020 it was partner of g-Y.BAF having 3 chicks together.

below: Lesser Black-backed Gull (graellsii) Y.AKU >15CY, March 31 2020, IJmuiden harbour, the Netherlands. Picture: Mars Muusse.

Again: with tertial spot on right side and left side. Messy wing. Black in some secondaries.

below: Lesser Black-backed Gull (graellsii) Y.AKU >14CY, April 23 2019, IJmuiden harbour, the Netherlands. Picture: Maarten van Kleinwee & Mars Muusse.

below: Lesser Black-backed Gull (graellsii) Y.AKU >13CY, April 09 2018, IJmuiden harbour, the Netherlands. Picture: Maarten van Kleinwee.

With tertial spot on left side (could not check right side).

below: Lesser Black-backed Gull (graellsii) Y.AKU >11CY, September 07 2016, IJmuiden, the Netherlands. Picture: Mars Muusse.

Bird in complete moult: P8-P10 old.

below: Lesser Black-backed Gull (graellsii) Y.AKU >10CY, October 03 2015, IJmuiden harbour, the Netherlands. Picture: Maarten van Kleinwee.

P7/P10.

below: Lesser Black-backed Gull (graellsii) Y.AKU >10CY, July 06 2015, IJmuiden harbour, the Netherlands. Picture: Maarten van Kleinwee.

below: Lesser Black-backed Gull (graellsii) Y.AKU >5CY, September 12 2010, IJmuiden, the Netherlands. Picture: Jan Zorgdrager & Maarten van Kleinwee.

Complete moult halfway.