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 Lelystad 028

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 028 positioned at breakwater 1 near nest 1 and nest 2, low on dam. Behind dense Elderberry, hampering observations.
  • ID 2020 uncertain, in cluster of Caspian Gull cachinnans nests and large eggs, but still could be Lesser Black-backed Gull.
location April 27th, 2020: nest location. April 27th, 2020: 3 eggs clutch.
 

Visits and data.

datum: egg no: width (mm) length (mm) volume (cm3):  water test on April 27th:  
27-04-2020 A 50,5 73,6 94,51 90 - tip on bottom 3 eggs in the nest, one cachinnans in direct vicinity.
27-04-2020 B 50,9 72,6 94,70 70 - tip on bottom  
27-04-2020 C 50,05 78 98,38 30 - tip on bottom
  sum nest: 287,59
07-05-2020 --     LBBG???
         
02-06-2020 --     LBBG???