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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Nests at Lelystad 2022
nest y-PNED
nest y-PHSV / r-CG
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X540
nest y-XCHP
nest w-327:U
nest n-F|N
nest r-6A
nest r-6B
nest r-6C
nest r-CS
nest r-FC
nest w-8Z
nest zy-MT
nest 003
nest 011
nest 012
nest 014
nest 015
nest 017
nest 017B
nest 018
nest 019
nest 021
nest 026
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053
nest 055
nest 058
nest 060
nest 061Z
nest 062
nest 063
nest 107Z
nest 109
nest 111
nest 112
nest 113
nest 117Z
nest 118Z
nest 123Z
nest 124Z
nest 125Z
nest 126Z
nest 127Z
nest 128Z
nest 129Z
nest 131Z
nest 132 YLG
nest 133
nest 134
nest 135
nest 136
nest 137
nest 138
nest 139
nest 143Z
nest 203
nest 204
nest 207
nest 222Z
nest 227
nest 228Z
nest 229
nest 230Z
nest 231
nest 240Z
nest 244
nest 245Z

Caspian Gull cachinnans 5.S 1CY-3CY, May 2022 & February 2024, the Netherlands. Picture: Annelies Marijnis, Thijs Horst & Mars Muusse.

Red tibia ring r[5.S] and metal NLA 5.625.115, ringed as pullus Larus cachinnans at nest y-P:U60 on May 17 2022 in colony Lelystad, the Netherlands. Ringer: Herman Bouman.
ID certain in 2022: both parents are Caspian Gull cachinnans.

date: egg no: width (mm) length (mm) volume (cm3):  water test on May 7th:  
12-04-2022 y-P:U60 present. Nest not excatly located yet, but close to place of previous season.
             
  egg no: width (mm) length (mm) volume (cm3):  water test on May 7th:  
15-04-2022 A 51,8 72,9 -- 40 - tip at bottom. 3 eggs in the nest.
  B 51,3 71,6 -- 30 - tip at bottom. Extrapolation: 1st egg laid on April 9th; 1st egg will hatch on May 7th. Ring: May 14th.
  C 50,1 70,5 -- 20 - tip at bottom.  
      sum nest: --    
   
27-04-2022 A       4 mm- floating. 3 eggs in the nest.
  B       3 mm- floating.  
  C       2 mm- floating.  
             
09-05-2022 y-P:U60 present.
   
  metal darvic mass  
17-05-2022 .5625114 r-5T 293 Much fish around nest, incl Roach / Rudd and rounded Goby.
  .5625115 r-5S 191      
  .5625116 r-5R 329      
         
  metal darvic mass  
30-05-2022 .5625116 r-5R 680 y-P:U60 and partner are present, together with (at least) .
   
02-06-2022 2 adults and 3 large chicks present.
   
17-06-2022 2 adults and (at least) 2 chicks present.
   
21-06-2022 2 adults and all 3 large chicks present.
   
28-06-2022 2 adults and all 3 large chicks present.
   
12-07-2022 2 adults and all 3 large chicks present.

below: Caspian Gull cachinnans 5.S 3CY, February 24 2024, Katwijk beach, the Netherlands. Picture: Annelies Marijnis.

below: Caspian Gull cachinnans 5.S 1CY, July 12 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 5.S 1CY, June 28 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

r[5.S] cachinnans from nest y[P:U60]. Picture: June 28th, 2022.
Fledged. Sibling r[5.R] & r[5.T] also fledged.

below: Caspian Gull cachinnans 5.S 1CY, June 21 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 5.S 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.