Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Lelystad 2020:
nest 001
nest 002 yPNED
nest 003
nest 005 yPLDP
nest 006 yPESV
nest 008 gXLDT
nest 009
nest 011
nest 012
nest 013
nest 014
nest 015
nest 016
nest 017
nest 018
nest 021
nest 025
nest 027
nest 028
nest 029
nest 031
nest 032
nest 033
nest 034
nest 035
nest 036
nest 037
nest 038
nest 039
pair A
pair B

Caspian Gull cachinnans F|1 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.

Black bar tibia ring n[F|1], ringed as pullus Larus cachinnans on May 21 2020 at nest 006 y[PESV] in colony Lelystad, the Netherlands.
Certainty on ID, breeders are Caspian Gull cachinnans, one partner is ringed yellow PESV and one unringed partner. Neighbours of yellow PLDP (nest 005).

datum: egg no: width (mm) length (mm) volume (cm3):   
15-04-2020 A 51 71,8 94,03 3 eggs in nest.
15-04-2020 B 51,4 70,9 94,31
15-04-2020 C 51,1 71,2 93,61
  sum nest: 281,95
07-05-2020 pullus   Nest with 3 small chicks (5 days old, 1 day old, 1 day old).
   
21-05-2020 pullus n[F|1] 2 pulli ringed.
21-05-2020 pullus n[F|7] 2 pulli ringed. n[F|7] ringed beneath nest near water.
   
02-06-2020 pullus 3 juveniles together, largest chick unringed swimming around.
02-06-2020 pullus 3 juveniles together, including n[F|1].
02-06-2020 pullus 3 juveniles together, including n[F|7].

Tibia black N-F|1 and metal NLA Arnhem 5.552.913, ringed as pullus Larus cachinnans on 21-05-2020 at Lelystad (Bataviahaven), the Netherlands (5230.00 N 525.00 E) - ringer Roland-Jan Buijs.

Recoveries:
24-09-2021, Kampen (Vossemeerplaat), Overijssel, NL 5.233,00 N 550,00 E colourring read G.J. Gerritsen