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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Cachinnans - nest megaphone.

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 "megaphone": positioned on artificial breakwater 1 west. Location is near Blackberry top of dam.
  • Certainty on ID in 2026: both parents are Herring Gull. Neighbour is nest g-M|Z.
nest April 22 2026: nest "megaphone". April 22 2026: location, top of dam. April 22 2026: 1 egg.
 

Visits and data 2026.

2026 parent 1 parent 2 A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume
TOTAL NEST:
# eggs
megaphone ? teus 72,3 49,9          
 
ringed:
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
               
OBSERVATIONS:
22-04-2026 nest 1 egg, measured. Megaphone on top of dam 1 west.
27-04-2026 parents Herring Gulls.