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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Caspian Gull cachinnans F3 1CY, May 21 & June 12 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.

Bird hatched in nest K03 in season 2020. Brother / sister of p[F2] and p[F4].
date: egg no: width (mm): length (mm): volume (cm3):      comments:
10-4-2020 A 49,3 68,1 115,12     3 eggs in nest.
10-4-2020 B 48,4 65,7 105,19    
10-4-2020 C 48,9 71,7 126,57    
             
24-4-2020 Attempt to trap parents at nest. Unsuccessful. 3 warm eggs.
             
      WING: HEAD + BILL: BILL: WEIGHT:
8-5-2020 pullus NLA 5.545.419 & p[F2] -- 54.3 19.6 98 3 pulli at nest.
8-5-2020 pullus NLA 5.545.420 & p[F3] -- 54.4 19.9 101
8-5-2020 pullus NLA 5.545.421 & p[F4] -- 51.0 19.5 78  
       
21-5-2020 pullus NLA 5.545.419 & p[F2] 120.0 94.7 38.3 680 3 chicks at the nest.
21-5-2020 pullus NLA 5.545.420 & p[F3] 124.5 94.1 37.6 672  
21-5-2020 pullus NLA 5.545.421 & p[F4] 99.5 88.6 37.7 550  
             
12-6-2020 NLA 5.545.420 & p[F3] 346.5 126.7 55.0 1117 2 chicks at the nest.
12-6-2020 NLA 5.545.421 & p[F4] 327.0 126.1 52.4 1221  

below: Caspian Gull cachinnans F3 1CY, June 12 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.

below: Caspian Gull cachinnans F3 1CY, May 21 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.