Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Cachinnans - nest De Kreupel H01 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 "H". Nest coded "H01" in season 2021.
partner 1: May 28th, 2021: Caspian Gull. May 28th, 2021: Caspian Gull. .
   
pulli: May 28th, 2021: pullus r[B.3]. May 28th, 2021: pullus r[B.4]. May 28th, 2021: pullus r[B.5].
 
  June 11th, 2021: pullus r[B.5]. June 11th, 2021: pullus r[B.5]. June 11th, 2021: pullus r[B.5].
 

Visits and data.

Date: details:          
28-5-2021 2 unringed adult Caspian Gull cachinnans at soil stockpile.        
  3 pulli in nest. metal: tibia: mass (gr): head + bill: tarsus:
https://waarneming.nl/observation/215268851/ NLA 5.556.772 r-B.3 180 64.1 37.3
  NLA 5.556.773 r-B.4 133 58.7 37.5
NLA 5.556.774 r-B.5 270 70.8 53.5
         
11-6-2021 1 pullus near nest. metal: tibia: mass (gr): head + bill: wing:
  https://waarneming.nl/observation/216987621/ NLA 5.556.774 r-B.5 805 104.4 190.5