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 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

 

Herring Gull argenteus F|2 1CY & 4CY, 2021 & 2024, Lelystad & Kwade Hoek, the Netherlands. Picture: Albert de Jong, Mars Muusse & Thijs Horst.

Ringed as Herring Gull argenteus-type pullus in a cluster of nests, labeled '"nest 60-62-63". tibia B-F|2 and metal NLA 5.559.414 ringed as pullus Larus argentatus at 28-05-2021 at Lelystad (Bataviahaven), Holland (5230.00 N 525.00 E). Ringer is Roland-Jan Buijs.

Recoveries:
27-09-2022 Blaringhem (Vuilstort), Nord, FRANKRIJK 5.040,00 N 224,00 E colourring read Jan Talloen
30-09-2022 Blaringhem (Vuilstort), Nord, FRANKRIJK 5.040,00 N 224,00 E colourring read Jan Talloen
03-05-2023 Callantsoog (Strand), Noord-Holland, NL 5.250,00 N 441,00 E colourring read Fred Cottaar
07-01-2024 Ouddorp (Strand), Zuid-Holland, NL 5.149,00 N 355,00 E colourring read T. Horst, M. Muusse & T. Muusse

Visits and data.

date:                
24-04-2021 Probably 2 partners present, but difficult to allocate birds to the nests. Nest allows trapping breeders.
  One partner is hybrid type sub-adult.
  3 eggs in nest.            
  egg no: width (mm) length (mm) volume (cm3):  water test on April 24th:       
  A egg 74,4 51,4 98,97 90 - tip on bottom      
  B egg 74,1 51,1 97,42 35 - tip on bottom      
  C egg 71,3 49,3 87,25 25 - tip on bottom  
  sum nest: 283,64        
   
26-04-2021 Pictures taken from canoe, of several birds flying around nests 60-62-63. How to monitor, telescope?
   
13-05-2021 Still 3 marked eggs in nest 63.
  Again sub-adult near nest, with Herring type wingtip.
   
15-05-2021 Fish at nest: Rounded Goby 3x. Chick 2 vomited Rounded Goby (pellet taken for analysis).
  egg hatching at 75%
  egg hatching at 33%
  egg still complete
                 
    metal tibia head + bill comments:
28-05-2021 pullus .5559412 b-F|0 92,3 Large pullus (16-18 days old), likely cachinnans from nest 60.
  pullus .5559413 b-F|1 95,3 Large pullus, likely cachinnans from nest 60.
  pullus .5559414 b-F|2 75,8 Possibly argentatus, not necessarily from neighbour's nest, b-F|3 broken.
  pullus .5559415 b-F|4 73,2 Possibly argentatus, not necessarily from neighbour's nest, b-F|3 broken.
  pullus .5559416 b-S|3 56,8 Likely argentatus, from neighbour's nest.
  pullus .5559417 b-S|4 57,2 Likely argentatus, from neighbour's nest.
               
08-06-2021 3 adult Caspian Gulls present. No chicks visible from canoe, not on south nor on north side from water. They probably hide in blackberries complex.

below: Herring Gull argenteus F|2 4CY, January 07 2024, Kwade Hoek, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Herring Gull argenteus F|2 1CY, May 28 2021, Lelystad, the Netherlands. Picture: Albert de Jong.