Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse

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Caspian Gull cachinnans 0.12 adult, August 2023 - September 2024, De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Tarsus ring y-0.12 and logger 6392, ringed as breeding adult Larus cachinnans on April 29 2023 at De Kreupel, Holland (5247.00 N 513.00 E). Ringer Kees Camphuysen & Leon Kelder.
See UvA-BITS for logger details.

Recoveries:

2023 04 29 De Kreupel eiland M NL 52,8 5,23 C.J. Camphuysen Nest M4 Handled 12:07-12:33, HPAIV swab, blood, biometrics, moult, ringed, GPS 6403  attached
Gezien 2023 08 10 De Kreupel 52,79867 5,22712 Thijs Horst
Gezien 2023 12 03 Polder Zeevang, Klemweg, Hoorn 52,55526667 5,0271 Maarten Hotting
Gezien 2024 04 27 De Kreupel eiland M 52,803 5,22541 Camera Trap observation
Gezien 2024 04 28 De Kreupel eiland M 52,803 5,22541 Camera Trap observation
Gezien 2024 04 30 De Kreupel eiland M 52,803 5,22541 Camera Trap observation
Gezien 2024 05 31 De Kreupel eiland M 52,803 5,22541 Leon Kelder
Gezien 2024 07 19 De Kreupel 52,79867 5,22712 Thijs Horst
Gezien 2024 07 30 De Kreupel 52,79867 5,22712 Thijs Horst

below: Caspian Gull cachinnans 0.12 adult, September 07 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.12 adult, August 05 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 0.12 adult, July 19 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.12 adult, August 10 2023, De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 0.12 adult, April 29 - June 29 2023, from GPS data.

Feeding trips during incubation and chick raising period.
Main foraging grounds are fish-traps, by-catch of fishermen.
Plot left: April 29 - May 29 2023.
Plot right: May 30 - June 29 2023.