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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International trend
National trend
Site characteristics
Breeding biology
Fecundity
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Nonbreeding season
Breeding species
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Nests at De Kreupel 2020
nest r-02P4 20
nest y-X804 20
nest D01 20
nest D02 20
nest D03 20
nest L01 20
nest L02 20
nest L03 20
nest M02 20

Nests at De Kreupel 2021
nest r-02P4 20
nest w-201U 21
nest g-XLHD 21
nest r-KA 21
nest r-KB 21
nest r-KC 21
nest r-KD 21
nest r-KE 21
nest r-KF 21
nest r-KH 21
nest r-KJ 21
nest r-KK 21
nest A01 21
nest C03 21
nest C04 21
nest C06 21
nest D01 21
nest D03 21
nest D05 21
nest D06 21
nest D07 21
nest D08 21
nest E01 21
nest H01 21
nest L01 21
nest L02 21
nest L05 21
nest L06 21
nest L07 21
nest M01 21
nest M04 21
nest M06 21
nest Q01 21

Caspian Gull cachinnans XLHD 6CY-9CY, April 2021 - March 2024, De Kreupel - B, the Netherlands. Picture: Leon Kelder, Thijs Horst & Mars Muusse.

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.

Breeder of nest XLHD-2021 at island B, temporarily nest coded B01.

Date: Egg no: Width (mm)  Higth (mm) Volume (cm3)   Details:
9-4-2021 A egg 51.5 70.3     3 eggs. Male is German g[XLHD], female is unringed.
  B egg 51.1 69.5     https://waarneming.nl/observation/210425539/
  C egg 51.9 72.3      
             
23-4-2021         3 eggs. Attempt to trap adult with cage. Failed.
   
14-5-2021 Metal: Tibia: Head + Bill: Tasus: Mass (gr): No eggs. 2 chicks out of nest. Where is 3rd chick?
5556706 Pale FG 62.8 38.7 162 https://waarneming.nl/observation/214568915/
5556707 Pale FJ 63.5 40.6 203
       
     
20-5-2021     No chicks near nest, but recent shit traces present. Alarming parents. .
     
28-5-2021     Alarming male approx 50 meters west. Pulli guarded to better hiding place?
    https://waarneming.nl/observation/215267282/
4-6-2021     Alarming male.
    https://waarneming.nl/observation/216519571/
17-6-2021     Alarming male.
    https://waarneming.nl/observation/217411696/

below: Caspian Gull cachinnans XLHD 9CY, March 03-04 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans XLHD 6CY, April 09 20 2021, De Kreupel - B, the Netherlands. Picture: Leon Kelder.

below: Caspian Gull cachinnans XLHD 6CY, June 17 2021, De Kreupel - B, the Netherlands. Picture: Leon Kelder.