Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Leon Kelder
Mars Muusse

Home

Cachinnans - nest De Kreupel L06 21

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 on island "L". Nest coded "L06" in season 2021.
pulli: May 20th, 2021: pullus b[D|2]. May 20th, 2021: pullus b[D|4]. .
   
prey: May 20th, 2021: Roach 2x. June 4th, 2021: Eel 2x. June 4th, 2021: Eel 2x.
 

Visits and data.

Date: details:          
23-4-2021 3 eggs in nest. egg no: width (mm): length (mm): volume (cm3): 
  A egg 49.8 73.4
  B egg 50.9 71.7
C egg 51.4 72.1
Attempt to trap breeding adult. Failed.
           
14-5-2021 Could not relocate the nest.          
           
20-5-2021 3 pulli in nest. metal: tibia: mass (gr): head + bill: tarsus:
Prey: Roach 2x. NLA 5.556.758 b-D|2 132 58.3 35.1
https://waarneming.nl/observation/214710481/ NLA 5.556.759 b-D|3 87 54.0 36.1
    NLA 5.556.760 b-D|4 119 58.8 33.7
         
4-6-2021 No chicks near nest.          
Prey: fresh Eel 2x. https://waarneming.nl/observation/216520181/