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 X540 5CY, April - June 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

DEH EA-204540 and y-X540, ringed as pullus Caspian Gull (Larus cachinnans) on June 03 2018 in a mixed Caspian Gull colony at Gräbendorfer See - Lausitz, Brandenburg, Germany (51°42'00"N 14°06'00"E).
In 2020 this bird shortly returned to the native colony in Germany, but decided to breed in the Netherlands in 2022.

In 2022 breeding bird at colony Lelystad, the Netherlands with male cachinnans in nest 223 (y-X540). Visits and data for this nest:

date
19-04-2022	behind nest 17, landing Caspian Gull and Caspian (hybrid?) y-X540. Best viewed from north side.
29-04-2022	3 eggs	egg no:	width (mm)	length (mm)	volume (cm3):	water test on April 29th:
		A egg	49,8	72,5	--	50 - tip on bottom
		B egg	48,3	71,4	--	90 - tip on bottom
		C egg	48,8	71,6	--	65 - tip on bottom
04-05-2022	2 adults at nest, including y-X540.
09-05-2022	3 eggs.
17-05-2022	2 eggs and 1 chick. B egg and C egg are hatching.
	pullus ringed with metal NLA .5625133
30-05-2022	2 chicks	metal	darvic	Mass	Wing	Head+Bill	Bill
		.5625172	r-6U	421	70	79,1	33,7
		.5625133	r-6V	410	84	78,5	28,2
	3rd chick is dead in the nest.
02-06-2022	adult y-X540 present and aggressive.
17-06-2022	3 ringed chicks are standing in nest 17, club of nest 17 together with nets 223 most likely.
21-06-2022	both parents present.
28-06-2022	adult y-X540 present.
12-07-2022	adult male present with chick r-6.U.
17-07-2022	adult male present with both chicks r-6.U & r-6.V.

below: Caspian Gull cachinnans X540 5CY, May 04 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

below: Caspian Gull cachinnans, partner of y[X540] in 2022, May 04 2022, Lelystad, the Netherlands. Picture: Mars Muusse.