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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International trend
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Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
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Nests at Lelystad 2023
nest y-PNED
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X60J
nest y-XCHP
nest w-327:U
nest n-F|6
nest n-F|8
nest n-F|+
nest n-F|N
nest r-6B
nest r-CG
nest w-8Z
nest 003
nest 006
nest 013
nest 014
nest 015
nest 017
nest 017B
nest 018
nest 019
nest 021
nest 026
nest 033
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053
nest 055
nest 060
nest 061Z
nest 062
nest 063
nest 107Z
nest 108
nest 109
nest 111
nest 112
nest 127Z
nest 131Z
nest 132 YLG
nest 135
nest 139
nest 147Z
nest 154
nest 163
nest 167
nest 168
nest 204
nest 206
nest 207
nest 223
nest 227
nest 230Z
nest 231
nest 244Z
nest 245Z
nest 248
nest 251
nest 252
nest 253
nest 254
nest 255Z
nest 256Z
nest 262

 

Caspian Gull cachinnans 0.11 5CY-6CY, April 2023 - March 2024, Almere & De Kreupel, the Netherlands. Picture: Leon Kelder ringing team, Thijs Horst & Mars Muusse.

Tarsus ring y-0.11 and logger 6402, ringed as breeding sub-adult (5CY) Larus cachinnans on April 29 2023 at island M - De Kreupel, Holland (5247.00 N 513.00 E). Ringer Kees Camphuysen & Leon Kelder.
See: UvA-BITS, GPS logger 6402 attached in April 2023.

Recoveries:

Year Mm Dd Location   Lat Long Observer   NOTES
2023 04 29 De Kreupel eiland M NL 52,8 5,2 C.J. Camphuysen Nest M1 Handled 12:00-12:26, HPAIV swab, blood, biometrics, moult, ringed, GPS 6402 attached
2023 08 01 Vooroever Wervershoof, Medemblik NL 52,7 5,1 Jeroen van Assema Photo provided, logger not mentioned
2023 09 22 Gemaal 4 Noorder Koggen Wervershoof NL 52,7 5,2 Anne (AJ) Laansma Photo provided, fishing (Perch), logger well visible, completing primary moult (score 43)
2023 10 24 visfuik vakantiepark Grootslag Andijk NL 52,8 5,2 Anne (AJ) Laansma Photo provided, foeragerend bij de vissers die fuiken leegden ten noorden van vakantiepark Grootslag
2023 11 26 De Blocq van Kuffeler, Almere, Flevoland NL 52,4 5,2 Eric Roeland Photo provided, bird in great shape apparently
2023 11 29 De Vaart, vuilverwerking, Almere NL 52,4 5,3 Thijs Horst Photo provided
2023 12 06 De Vaart, vuilverwerking, Almere NL 52,4 5,3 Thijs Horst .
2024 01 05 De Vaart, vuilverwerking, Almere NL 52,4 5,3 Matthew Sprangers .
2024 01 09 De Vaart, vuilverwerking, Almere NL 52,4 5,3 Thijs Horst .
2024 01 12 De Vaart, vuilverwerking, Almere NL 52,4 5,3 Thijs Horst Met Mars. Photo provided
2024 02 03 Brägel waste processing plant FRG 52,7 8,3 Hendrik Bente Photo provided
2024 03 04 De Kreupel NL 52,8 5,2 Thijs Horst Gelokt met brood, geen plaats

In 2023:
Nest is M1, partner is unringed adult Larus cachinnans.
Offspring are: 1x dead chick in nest, g-0|2 & g-0|3.

below: Caspian Gull cachinnans 0.11 6CY, March 04 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.11 6CY, January 12 2024, Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.11 5CY, December 06 2023, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 0.11 5CY, August 01 - September 22 2023, from GPS data.

Positions for GPS, after breeding season.

below: Caspian Gull cachinnans 0.11 5CY, 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.

Below: principal foraging area in summer (May-June) during incubation and chick care.

below: Caspian Gull cachinnans 0.11 5CY, April 29 2023, De Kreupel, the Netherlands. Picture: ringing team.