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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Cachinnans - nest Lelystad 134

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 134 positioned on dam 1, 12 mtr west of nest 19 and 6 mtr west of 133.
  • ID uncertain in 2022: could be LBBG. No longer monitored after May 4th.
location April 27th, 2022: nest location. April 27th, 2022: nest location. April 27th, 2022: 2 eggs.
 

Visits and data 2022 for nest 134:
Estimation egg laying: A-egg = April 25 2022. Estimating hatching = May 23 2022.

date:              
12-04-2022 adult near nest.  
               
  egg no: width (mm): length (mm): volume (cm3):       
27-04-2022 A 49 68,6 -- flat bottom 2 eggs  
  B 50 65,9 -- flat bottom  
   
04-05-2022 LBBG?
09-05-2022 3 eggs.
17-05-2022 3 eggs.