Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Caspian Gull cachinnans C.B 1CY-4CY, May 2022 - April 2025, the Netherlands & Spain. Picture: Thijs Horst, Mars Muusse & Carlos Andrés.
Red tibia ring r[C.B] and metal NLA 5.625.052, ringed as pullus Larus cachinnans at nest 60 on May 09 2022 in colony Lelystad, the Netherlands. Ringer: Roland-Jan Buijs.
ID certain, parents are male and female Caspian Gull; in season 2022 same parents as in season 2021.
Recoveries:
17-05-2022 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E captured by ringer Albert de Jong
02-08-2022 Almere (Oostvaardersplassen), Flevoland, NL 5.226,00 N 517,00 E colourring read G.J. Gerritsen
27-12-2022 Lekeitio (Strand), Bizkaia, SPANJE 4.322,00 N 230,00 W colourring read Juan Carlos Andrés
31-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
26-04-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
26-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
29-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
29-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
25-03-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
25-03-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
01-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
04-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
25-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
05-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
06-09-2025 Lelystad (Oostvaardersplassen), Flevoland, NL 5.227,00 N 524,00 E colourring read Maarten Hotting
Visits and data 2022
Estimation egg laying: A-egg = April 6 2022??? Estimating hatching = May 4 2022.
| date: | |||||||
| 11-04-2022 | 3 eggs. | ||||||
| 12-04-2022 | Picture of adult male Caspian. | ||||||
| egg no: | width (mm): | length (mm): | volume (cm3): | water test | |||
| 15-04-2022 | A-egg | 51,2 | 70,1 | -- | 40 - tip on bottom | ||
| B-egg | 48,9 | 68,5 | 30 - tip on bottom | ||||
| C-egg | 51,1 | 70 | -- | 50 - tip on bottom | |||
| sum nest: | -- | ||||||
| 19-04-2022 | Adult breeding & 1 adult guarding. | ||||||
| egg no: | width (mm): | length (mm): | volume (cm3): | water test | |||
| 27-04-2022 | A-egg | 5 mm - floating | |||||
| B-egg | 5 mm - floating | ||||||
| C-egg | 5 mm - floating | ||||||
| 01-05-2022 | 2 adult Caspians, male has spot on P5. | ||||||
| 04-05-2022 | 3 eggs - little cracks in shell. hatching date will be 6th May. | ||||||
| 09-05-2022 | metal | darvic | mass | wing | H+B | ||
| pullus | NLA 5.625.051 | r-C.A | 117 | ||||
| pullus | NLA 5.625.052 | r-C.B | 91 | ||||
| pullus | NLA 5.625.053 | r-C.C | 137 | ||||
| 17-05-2022 | metal | darvic | mass | wing | H+B | ||
| pullus | NLA 5.625.051 | r-C.A | 483 | ||||
| pullus | NLA 5.625.052 | r-C.B | 388 | ||||
| pullus | NLA 5.625.053 | r-C.C | 530 | ||||
| food | loads of fish near the nest. | ||||||
| 02-06-2022 | r-CB & r-CC swimming northside of dam, 80 meters from nest. Large chicks, protected by female. r-CB gives up food pellet: fish. | ||||||
| 17-06-2022 | One large chick from nest 60 flies out over Markermeer. And back again. | ||||||
| 22-06-2022 | r-CB & r-CC swimming northside of dam, 200 meters from nest. Large chicks, protected by parent. | ||||||
| 12-07-2022 | Picture of r-CC. | ||||||
below: Caspian Gull cachinnans C.B 4CY, April 04 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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below: Caspian Gull cachinnans C.B 4CY, March 25 2025, colony Lelystad & Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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below: Caspian Gull cachinnans C.B 3CY, June 29 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans C.B 3CY, March 31 2024, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
below: Caspian Gull cachinnans C.B 1CY, December 27 2022, Lekeitio - Bizkaia, Spain. Picture: Carlos Andrés.
below: Caspian Gull cachinnans C.B 1CY, June 21 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
r[C.B] cachinnans from nest 60. Picture: June 21st, 2022. Fledged, seen together with r[C.C].
Sibling r[C.A] not recorded after May 17th.
below: Caspian Gull cachinnans C.B 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
below: Caspian Gull cachinnans C.B 1CY, May 09 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
