Larus cachinnans in the Netherlands

(last update: August 16, 2020)
Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse

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Project Info
Location Lelystad
Location De Kreupel
2019 Lelystad
2020 Lelystad
2021 Lelystad
Coded nests Lelystad
2020 De Kreupel
2021 De Kreupel
Coded nests De Kreupel
All ring codes 2020
All ring codes 2021

Lelystad 2020:
nest 001
nest 002 yPNED
nest 003
nest 005 yPLDP
nest 006 yPESV
nest 008 gXLDT
nest 009
nest 011
nest 012
nest 013
nest 014
nest 015
nest 016
nest 017
nest 018
nest 021
nest 025
nest 027
nest 028
nest 029
nest 031
nest 032
nest 033
nest 034
nest 035
nest 036
nest 037
nest 038
nest 039
pair A
pair B

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 042

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 042-2021 discovered late in season (May 28th, 2021). Dam 2, between nest 15 and nest 48 (was nest 15B). On top of bunch of branches, which appears to be an old Spoonbill nest.
  • Nest 042-2024 at dam 2, between nest 15 and nest 48 (was nest 15B). In 2024: 3 eggs, letters KLM:  left to right are nest 48 (M), nest 42 (L) & nest 15 (K).
  • ID uncertain: both partners unknown.
  • ID uncertain: both partners unknown.
location May 28th, 2021: nest in background. May 13th, 2021. .
   
partner 1 May 14 2024:H Herring Gull. . .
     
pullus May 28th, 2021: b[S|2]. June 18 2024: Herring Gull chick b/w-AS. June 18 2024: Herring Gull chick b/w-A+.
 
food June 18 2024: food b/w-AS is fish. . .
     

Visits and data 2021.

date:            
    metal tibia ring mass    
28-05-2021 pull .5559401 b-S|2 72    
   
08-06-2021 Nest on bunch of branches abandoned. Maybe parents and chick moved to the northside of the dam?
   
26-6-2021 Just Spoonbills present.

Visits and data 2024.

NEST code parent 1 parent  2 A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume TOTAL NEST:
042-2024 teus teus 67,4 48,6 80,16 67,3 49,2 82,02 65,4 49,7 81,34 243,52
  # eggs A-egg hatch # ringed chicks # all chicks # fledged chicks comments
  3 02-5-2024 31-5-2024
   
dam: dam 2 central
location: was 42 under prunus, between 15 and 48
parents? new?
   
ring pulli: 4 June
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
04-06-2024 b/w-AS .5631150 L / 42 teus 1CY 217 64,3        
04-06-2024 b/w-AT .5631001 L / 42 teus 1CY 243 66,3        
18-06-2024 b/w-AS .5631150 L / 42 teus 1CY 169 658 93,0        
18-06-2024 b/w-A+ .5631028 nest 42 teus 1CY 137 594 86,8        
                           
OBSERVATIONS:
07-05-2024 eggs: 3 eggs, measured.
  nest: complicated locations 3x nests with 3 eggs, letters KLM:  left to right are nest 48 (M), nest 42 (L) & nest 15 (K)
14-05-2024 nest: 3 eggs.
  adult: Herring Gull.
04-06-2024 chicks: 2x ringed.
18-06-2024 chicks: CONTROLL: b/w-AS measured again.
  1x ringed: b/w-A+.
food: fish bolus from b/w-AS.