Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Nests at Lelystad 2022
nest y-PNED
nest y-PHSV / r-CG
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X540
nest y-XCHP
nest w-327:U
nest n-F|N
nest r-6A
nest r-6B
nest r-6C
nest r-CS
nest r-FC
nest w-8Z
nest zy-MT
nest 003
nest 011
nest 012
nest 014
nest 015
nest 017
nest 017B
nest 018
nest 019
nest 021
nest 026
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053
nest 055
nest 058
nest 060
nest 061Z
nest 062
nest 063
nest 107Z
nest 109
nest 111
nest 112
nest 113
nest 117Z
nest 118Z
nest 123Z
nest 124Z
nest 125Z
nest 126Z
nest 127Z
nest 128Z
nest 129Z
nest 131Z
nest 132 YLG
nest 133
nest 134
nest 135
nest 136
nest 137
nest 138
nest 139
nest 143Z
nest 203
nest 204
nest 207
nest 222Z
nest 227
nest 228Z
nest 229
nest 230Z
nest 231
nest 240Z
nest 244
nest 245Z

Caspian Gull cachinnans hybrid XCHP 1CY-7CY, 2018-2024, Lelystad & Almere, the Netherlands. Picture: Pascal Lepretre, Thijs Horst & Mars Muusse.

DEH EA-211894 and y-XCHP, ringed as pullus Caspian Gull (Larus cachinnans) on June 06 2018 in a mixed Caspian Gull colony at Gräbendorfer See - Lausitz, Brandenburg, Germany (51°42'00"N 14°06'00"E).

In 2022 breeding bird at colony Lelystad, the Netherlands with male cachinnans in nest XCHP. Visits and data for this nest:

11-04-2022	XCHP present, low on blocks.
12-04-2022	XCHP & partner present.
15-04-2022	XCHP & partner present.
			length	width	water test
29-04-2022	2 eggs	A egg	68,1	49,9	float - 2 mm		XCHP & sub-adult partner. 2 eggs clutch.
		B egg	68,6	51,1	float - 1 mm		XCHP is hybrid type (no mirror P9) en 4CY is subad cach type.
09-05-2022	XCHP present. No chicks found.
17-05-2022		metal:	darvic:	mass:	Head + Bill		Bill
	pullus	.5625128	r-51	285	74,4		--
	pullus	.5625129	r-50	351	77,4		--
22-05-2022	No chicks found.
30-05-2022		metal:	darvic:	mass:	Head + Bill		Bill
	pullus	.5625128	r-51	764	99,5		36,6
	pullus	.5625129	r-50	861	104,7		41
02-06-2022	y-XCHP & partner present.
21-06-2022	y-XCHP & partner present.
	r50 & r51 swimming and flying south of dam 2.
28-06-2022	y-XCHP & partner present.
	r50 & r51 swimming and flying south of dam 2.
17-07-2022	photographed y-XCHP

below: Caspian Gull cachinnans hybrid XCHP 7CY, October 13 2024, Nieuwpoort beach, Belgium. Picture: Pascal Lepretre.

below: Caspian Gull cachinnans hybrid XCHP 7CY, March 25 2024, colony Lelystad, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans hybrid XCHP 7CY, January 16 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans hybrid XCHP 6CY, July 08 2023, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans hybrid XCHP 6CY, April 05 2023, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans hybrid XCHP 6CY, April 05 2023, Lelystad, the Netherlands. Picture: Mars Muusse.

Breeding at the very same spot as last season.

below: Caspian Gull cachinnans hybrid XCHP 5CY, November 07 2022, Westkapelle, the Netherlands.

Iris turning paler, and note again rather short and high bill.

below: Caspian Gull cachinnans hybrid XCHP 5CY, July 17 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans hybrid XCHP 5CY, June 21 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Here it is explained why we consider this bird to be hybrid.

below: Caspian Gull cachinnans hybrid XCHP 5CY, April 11 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

below: Caspian Gull cachinnans hybrid XCHP 4CY, July 27 2021, Oostvaardersdijk - Lelystad, the Netherlands.

below: Caspian Gull cachinnans hybrid XCHP 3CY, July 10 2020, Oostvaardersdijk - Almere, the Netherlands.

below: Caspian Gull cachinnans hybrid XCHP 1CY, December 07 2018, Le Portel, France.

Classic cachinnans in all aspects, at this age.