Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Leon Kelder
Mars Muusse

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Lesser Black-backed Gull graellsii F|D 1CY & 4CY, May 2019 & April 2022, Lelystad & Almere, the Netherlands. Picture: Merijn Loeve, Mars Muusse & Eric Roeland.

Black bar tibia ring n[F|D], ringed as pullus Larus cachinnans on May 16 2019 in colony Lelystad, the Netherlands. Bird hatched in nest A2019.
Size and mass when ringing indicated this was a suspicious nest. In 2022, n-F|D was photographed and clearly showed a Lesser Black-backed Gull, not Caspian Gull.

Data for nest A2019.

May 01 2019 3 eggs in nest.
May 16 2019 2 chicks ringed: n[F|D] & NLA 5.548.153 and n[F|E] & NLA 5.548.154
May 24 2019 no data.

below: Lesser Black-backed Gull graellsii F|D 4CY, April 19 2022, Lelystad colony, the Netherlands. Picture: Mars Muusse.

Slightly paler grey on upperparts than average.

below: Lesser Black-backed Gull graellsii F|D 4CY, April 01 2022, Almere, the Netherlands. Picture: Eric Roeland.

below: Lesser Black-backed Gull graellsii F|D 1CY, May 16 2019, Lelystad, the Netherlands. Picture: Merijn Loeve.