Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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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 016

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 016 positioned at breakwater 2, eight meters east of nest 017 (which has a huge mark on a block).
• ID uncertain in 2020, assumed to be hybrid (?) Caspian Gull cachinnans, on P10 patterns with much black and lacking strong hooked angle of white tongue.
• In 2021 only one observation of an adult cachinnans on look-out with empty nest. Wingtip pattern does not match birds of previous season.

location	Nest location on April 15th, 2020: 2 egg clutch.	Adult with strong yellow legs, April 16th, 2021.	.
partner 1	May 7th, 2020.	May 7th, 2020.	Adult with strong yellow legs, April 16th, 2021.
partner 2	May 7th, 2020.	.	.

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