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 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 FR 1CY-4CY, May 2021 - February 2024, De Kreupel & Almere, the Netherlands. Picture: Leon Kelder, Thijs Horst & Mars Muusse.

Pale blue tibia ring p[FR] and metal NLA 5.556.713, ringed as pullus Larus cachinnans on May 14 2021 at nest C06 21 in colony De Kreupel island C, the Netherlands. Ringer: Leon Kelder.
ID uncertain: 1 parent seems to be Herring Gull argentatus-type, other parent is unknown.

Recoveries:
20-05-2021 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
11-06-2021 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
12-04-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Mars Muusse
17-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
27-03-2023 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Leon Kelder
30-05-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
24-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
01-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
20-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
12-04-2024 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Leon Kelder

Visits and data for nest C06-2021:

Date: details:          
           
14-5-2021 3 chicks in nest. metal: tibia: mass (gr): head + bill: tarsus:
  Prey: 1x Roach; 2x Eel. NLA 5.556.713 Pale FR 92 54.6 31.9
  https://waarneming.nl/observation/214662060/ NLA 5.556.714 Pale FS 106 56.8 33.3
    NLA 5.556.715 Pale FT 76 51.3 29.1
   
20-5-2021 3 chicks in nest. metal: tibia: mass (gr): head + bill: wing:
  Prey: 1x Roach; 1x Rounded Goby. NLA 5.556.713 Pale FR 313 71.1 52.0
  https://waarneming.nl/observation/214706998/ NLA 5.556.714 Pale FS 296 72.4 57.5
    NLA 5.556.715 Pale FT 207 67.0 --
             
11-6-2021 3 chicks in nest. metal: tibia: mass (gr): head + bill: wing:
  Prey: 4x Roach & 1x Perch (vomited) NLA 5.556.713 Pale FR 1094 117.0 278.5
  https://waarneming.nl/observation/216984901/  NLA 5.556.714 Pale FS 917 113.4 277.5
    NLA 5.556.715 Pale FT 1104 114.7 253.0

below: Caspian Gull cachinnans FR 4CY, February 01 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans FR 3CY, March 17 2023, Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans FR 2CY, April 12 2022, Almere, the Netherlands. Picture: Mars Muusse.

below: Caspian Gull cachinnans FR 1CY, June 11 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.

below: Caspian Gull cachinnans FR 1CY, May 14 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.