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 F4 1CY-3CY, May - June 2020, February 2021 & August 2022, De Kreupel & Almere, the Netherlands. Picture: Eric Roeland, Leon Kelder & Thijs Horst.

Tibia pale blue F4 and metal NLA 5.545.421, ringed as pullus Caspian Gull (Larus cachinnans) on 08-05-2020 at colony De Kreupel (IJsselmeer), the Netherlands (NL 5247.00 n 513.00 E), by ringer Leon Kelder.
Bird hatched in nest K03 in season 2020. Brother / sister of p[F2] and p[F3].

Recoveries
21-04-2020 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
12-06-2020 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
24-02-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
23-04-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
06-08-2022 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Albert de Jong
07-08-2022 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Thijs Horst
date: egg no: width (mm): length (mm): volume (cm3):      comments:
10-4-2020 A 49,3 68,1 115,12     3 eggs in nest.
10-4-2020 B 48,4 65,7 105,19    
10-4-2020 C 48,9 71,7 126,57    
             
24-4-2020 Attempt to trap parents at nest. Unsuccessful. 3 warm eggs.
             
      WING: HEAD + BILL: BILL: WEIGHT:
8-5-2020 pullus NLA 5.545.419 & p[F2] -- 54.3 19.6 98 3 pulli at nest.
8-5-2020 pullus NLA 5.545.420 & p[F3] -- 54.4 19.9 101
8-5-2020 pullus NLA 5.545.421 & p[F4] -- 51.0 19.5 78  
       
21-5-2020 pullus NLA 5.545.419 & p[F2] 120.0 94.7 38.3 680 3 chicks at the nest.
21-5-2020 pullus NLA 5.545.420 & p[F3] 124.5 94.1 37.6 672  
21-5-2020 pullus NLA 5.545.421 & p[F4] 99.5 88.6 37.7 550  
             
12-6-2020 NLA 5.545.420 & p[F3] 346.5 126.7 55.0 1117 2 chicks at the nest.
12-6-2020 NLA 5.545.421 & p[F4] 327.0 126.1 52.4 1221  

below: Caspian Gull cachinnans F4 3CY, August 07 2022, Almere, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans F4 2CY, February 23 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F4 1CY, June 12 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.

below: Caspian Gull cachinnans F4 1CY, May 21 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.