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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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

Herring Gull argenteus 5.= 1CY, May 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Red tibia ring r[5.=] and metal NLA 5.625.147, ringed as pullus Larus argentatus at nest 117Z on May 22 2022 in colony Lelystad, the Netherlands. Ringer: Jeroen Nagtegaal.
ID uncertain in 2022, one parent is Herring Gull. Other not photographed, but most likely Herring Gull too.

Visits and data for nest 117Z:

27-Apr-22 3 eggs A egg 68,8 48,3 tip bottom - 35 gr
B egg 70,1 48,1 tip bottom - 80 gr
C egg 68,5 48 tip bottom - 50 gr
01-May-22 adult Herring near nest
04-May-22 3 eggs with Herring Gull
09-May-22 3 eggs
17-May-22 2 eggs male is Herring, female possibly Caspian?
metal darvic mass wing Head+Bill
22-May-22 pullus 5625146 r-5+ 205 44 64,4
pullus 5625147 r-5= 98 29 54,2
1 egg intact          
metal darvic mass wing H+B Bill
30-May-22 pullus 5625146 r-5+ 375 72 78 30,5
pullus 5625147 r-5= 336 51 72,3 25,8
  1 egg infertile
  food: r[5.=] threw up sausage
17-Jun-22 adult present

below: Herring Gull argenteus 5.= 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

r[5.=] argenteus from nest 117Z. Picture: May 30th, 2022.
Ringed May 22nd and observed again on May 30th. No observations since. Same for sibling r[5.+] from this 2-egg nest (3rd egg infertile).

Food item: r-5= threw up sausage.

below: Herring Gull argenteus 5.= 1CY, May 22 2022, Lelystad, the Netherlands. Picture: Mars Muusse.