Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
Caspian Gull cachinnans P:9R0 5CY-6CY, 2024 - 2025, the Netherlands. Picture: Mars Muusse & Thijs Horst.
Caspian Gull (Larus cachinnans) with yellow tarsus P:9R0. Ringed as pullus on May 30 2020 at colony (Larus cachinnans kolonia) Mietków, Poland.
In 2024: breeding at Lelystad, nest y-P:9R0.
Recoveries:
| 30/05/2020 | Zbiornik Mietkowski POLAND (DOLNOŚLĄSKIE) | ODRA Paweł Grochowski |
| 30/05/2020 | Zbiornik Mietkowski POLAND (DOLNOŚLĄSKIE) | ODRA Jacek Betleja |
| 23/11/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 28/11/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 29/11/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 30/11/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 02/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 03/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 04/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 05/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 06/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 08/12/2020 | Eitting:Umwelt Wurzer GERMANY (BAVARIA: OBERBAYERN) | Christian Tolnai Josef Reichart |
| 20/10/2021 | Ostrów Wielkopolski: ul.Osiedlowa POLAND (WIELKOPOLSKIE) | Maciej Urbaniak |
| 28/02/2022 | Újszentmargita (Cserepes-puszta, kútles) HUNGARY (HAJDU-BIHAR) | BUDAPEST .HGB J. Tar |
| 04/02/2023 | Almere: de Vaart NETHERLANDS (FLEVOLAND) | Eric Roeland |
| 08/02/2023 | Almere-De Vaart NETHERLANDS (FLEVOLAND) | Dick Kuipers |
| 12/02/2023 | Almere: de Vaart NETHERLANDS (FLEVOLAND) | Eric Roeland |
| 05/01/2024 | Almere: de Vaart NETHERLANDS (FLEVOLAND) | Eric Roeland |
| 06/01/2024 | Almere: de Vaart NETHERLANDS (FLEVOLAND) | Eric Roeland |
| 19/01/2024 | Almere: de Vaart NETHERLANDS (FLEVOLAND) | Eric Roeland |
| 08/03/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse |
| 19/03/2024 | Lelystad, Bataviahaven NETHERLANDS (FLEVOLAND) | Maarten Hotting |
| 20/03/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse |
| 25/03/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst |
| 26/03/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse |
| 08/04/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse Gabi Martin, Theo Muusse |
| 12/04/2024 | Lelystad - Colony Oostvaardersdiep NETHERLANDS (FLEVOLAND) | Merijn Loeve Mars Muusse |
| 23/04/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse |
| 26/04/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse Albert de Jong |
| 17/05/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst |
| 04/06/2024 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse Albert de Jong |
| 19/08/2024 | Marker Wadden NETHERLANDS (FLEVOLAND) | Maarten Hotting |
| 16/03/2025 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst Mars Muusse |
| 20/03/2025 | Bataviahaven, Lelystad NETHERLANDS (FLEVOLAND) | thijs horst |
| 28/04/2025 | Marker Wadden NETHERLANDS (FLEVOLAND) | Maarten Hotting |
| 31/05/2025 | Marker Wadden NETHERLANDS (FLEVOLAND) | Maarten Hotting |
| 13/06/2025 | Marker Wadden NETHERLANDS (FLEVOLAND) | thijs horst |
| 13/06/2025 | Marker Wadden NETHERLANDS (FLEVOLAND) | Maarten Hotting |
| 11/07/2025 | Marker Wadden NETHERLANDS (FLEVOLAND) | thijs horst |
Visits and data 2024.
| NEST code | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | |
| P:9R0 2024 | cach | cach | 67,4 | 51,2 | 88,96 | 69 | 49,5 | 85,13 | 69 | 48,2 | 80,71 | 254,80 | |
| # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | |||||||
| 3 | 11-4-2024 | 6-5-2024 | |||||||||||
| dam: | dam 1 east | ||||||||||||
| location: | In bend on N-side, in blackberry complex. 135-2023 coded on block. Was thayeri 2022. | ||||||||||||
| parents? | y-P:9R0 is new breeder. | ||||||||||||
| ring pulli: | 09-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 14-05-2024 | g-C|E | .5631102 | nest P9R0 | PONT | 1CY | 98 | |||||||
| 14-05-2024 | g-C|F | .5631103 | nest P9R0 | PONT | 1CY | 101 | |||||||
| OBSERVATIONS: | |||||||||||||
| 08-03-2024 | adult: | P9R0 on bread. | |||||||||||
| 12-04-2024 | eggs: | 1 egg, measured. | |||||||||||
| 21-04-2024 | eggs: | 3 eggs, measured. | |||||||||||
| 23-04-2024 | adults: | unringed female incubating, y-P:9R0 guarding on stone. | |||||||||||
| 02-05-2024 | adults: | P9R0 guarding, female incubating. | |||||||||||
| 14-05-2024 | chicks: | 2x ringed. Fish bolus when processed. | |||||||||||
| food: | Fish. 3x Roach, 1x Perch, 2x Round Goby. | ||||||||||||
| eggs: | 1x in nest. | ||||||||||||
| 04-06-2024 | pullus: | g-C|F dead. Rings removed. No sign of g-C|E. Nest failed? | |||||||||||
| adult: | y-P:9R0 present, interested in bread. | ||||||||||||
Visits and data 2025.
| NEST code | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume |
| y-P:9R0 | |||||||||||
| dam: | dam 1 east
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| location: | In bend on N-side, in blackberry complex, 135-2023 coded on block, Was thayeri 2022,
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| ouders: | |||||||||||
| ring pulli: | |||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus |
OBSERVATIONS:
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| 3/16/2025 | nest | P9R0 present with partner, location is 2024, north dam 1, east of blocks,
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| 3/20/2025 | nest | P9R0 present with partner
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| 4/23/2025 | nest | no birds present for over several weeks now,
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| 4/28/2025 | nest | moved to Marker Wadden (Maarten Hotting, pers comm),
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below: Caspian Gull cachinnans P:9R0 6CY, July 11 2025, Marker Wadden, the Netherlands. Picture: Thijs Horst.
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below: Caspian Gull cachinnans P:9R0 6CY, March 16 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Back at same location as nest in 2024.
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below: Caspian Gull cachinnans P:9R0 5CY, March 26 2024, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
below: Caspian Gull cachinnans P:9R0 5CY, March 25 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans P:9R0 5CY, March 20 2024, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
below: Caspian Gull cachinnans P:9R0 5CY, March 08 2024, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
