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

Lelystad 2021
nest y-PNED
nest y-PLDP
nest y-PHSV
nest y-P:A02
nest y-P:U60
nest zy-MT
nest r-FB
nest r-FC
nest 001
nest 003
nest 006
nest 011
nest 012
nest 013
nest 014
nest 015
nest 016B
nest 017
nest 018
nest 019
nest 021
nest 034
nest 035
nest 038
nest 040
nest 041
nest 042
nest 044
nest 045
nest 046
nest 047
nest 048
nest 053
nest 055
nest 056
nest 058
nest 060
nest 062
nest 063
nest 065
nest 066
nest 067
nest 072

Cachinnans - nest Lelystad r-F.C (043-2021; 104-2022)

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).
• Location in 2021 is nest 043 at T-split bend below nest 21. Nest positioned behind large trunk. Male often guarding on blocks. Neighbour is Lesser Black-backed Gull, nest only 3 meters apart.
• Location in 2022 is nest 104 at dam 1 east, neighbour of y-PNED (20 meters away). Nest positioned high on dam 1. Nest in 2022 is about 200 mtrs east of position in 2021.
• ID for nest 043 certain in 2021, both partners are Caspian Gull cachinnans. Male ringed in 20212: r[F.C].
• ID for nest 104 certain in 2022, both partners are Caspian Gull cachinnans. Unringed female is not partner 2021, but a different bird.

location 2021	June 8th, 2021: situation at T-split northwest.	June 8th, 2021: neighbour LBBG at 3 meters.	.
location 2022	April 27th, 2022: east on dam 1.	April 27th, 2022: nest.	April 27th, 2022: 2 eggs in nest.
partner 1	May 28th, 2021: male cachinnans r[F.C].	May 28th, 2021: male cachinnans r[F.C].	May 28th, 2021: male cachinnans r[F.C].
partner 1	April 27th, 2022: partner 1 = cachinnans r-F.C.	May 1st, 2022: partner 1 = cachinnans r-F.C.	May 4th, 2022: partner 1 = cachinnans r-F.C.
partner 2-2021	June 8th, 2021, P10 right wing with thayeri.	June 8th, 2021, P10 right wing with thayeri.	June 8th, 2021, P10 right wing with thayeri.
partner 2-2022	April 27th, 2022: partner 2 = cachinnans (new partner).	April 27th, 2022: partner 2 = cachinnans.	April 27th, 2022: partner 2 = cachinnans.
pulli 2021	June 26th, 2021: pullus cachinnans r[F.3].	June 26th, 2021: pullus cachinnans r[F.3].	June 26th, 2021: pullus cachinnans r[F.4].
pulli 2022	May 17th, 2022: chick r-5.8.	May 17th, 2022: chick r-5.9.	July 12th, 2022: chick r-5.8.

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