Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Herring Gull argenteus hybrid K.J adult, April 23 2021, De Kreupel - C, the Netherlands. Pictures: Merijn Loeve.

You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl

Coordinator: Leon Kelder.
Ringers: Roland-Jan Buijs, Leon Kelder & Merijn Loeve.

date: egg no: width (mm): length (mm): volume (cm3):      comments:
23-4-2021 A 50.6 77.0       1 egg. Location is Kreupel - C nest 5. One parent trapped at nest.
             

r[K.J] and metal NLA 6.211.443, probably hybrid Herring x Caspian Gull 4+CY.
Wing: 455
Head + Bill: 127,3
Bill: 59,7
Bill height: 20,0
Tarsus: 70,3
Kodak grey scale: 4
Weight: 1156
Moult in primaries: P1-P10 old.