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

Cachinnans - nest Lelystad y-X540

General remarks:

• Eggs: Volume measured by Stonehouse (1964) and Spaans & Spaans (1975), which make comparison possible with data from Texel (Camphuysen pers comm 16.04.2020).
• Nest 223 positioned high on breakwater dam 2 in a Blackberry complex, just 5 meters north of nest 17.
• ID certain in 2022, both partners are cachinnans, but female y-X540 has some hybrid vibe, maybe due to its obvious sub-adult plumage.

location	April 19th, 2022: nest y-X540 behind nest 17.	April 29th, 2022: 3 eggs.	April 29th, 2022: nest location marked "223".
partner 1	May 4th, 2022: female is 5CY cachinnans y-X540.	May 4th, 2022: female is 5CY cachinnans y-X540.	May 4th, 2022: female is 5CY cachinnans y-X540.
partner 2	May 1st, 2022: male is Caspian Gull.	May 4th, 2022: male is Caspian Gull.	May 4th, 2022: male is Caspian Gull.
pulli	May 30th, 2022: pullus r-6.V.	July 17th, 2022: fledged r-6.V.	July 17th, 2022: fledged r-6.U.

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