Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Caspian Gull cachinnans hybrid C|V 1CY, May - June 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Merijn Loeve.

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Tibia ring G-C|V and metal NLA 5.631.121, ringed as pullus Larus cachinnans hybrid on May 31 2024 in nest g-A|N_2024 at Lelystad, the Netherlands. Ringed by Merijn Loeve (Roland-Jan Buijs ringing team).
Mother is Herring Gull, father is Caspian Gull.

Visits and data 2024.

NEST code parent 1 parent  2 A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume TOTAL NEST:
g-A|N cach teus 81,9 48,1 95,41 0 0 0,00 0,00 95,41
099-2024 # eggs A-egg hatch # ringed chicks # all chicks # fledged chicks comments
    20-4-2024 18-5-2024
   
dam: dam 1 west
location: near Blackberry top of dam, 50 mtr E of r-7P. Code sprayed on tarmac.
parents? New
   
ring pulli: 22-May
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
02-05-2024 g-A|N .5631218 nest 99 dam 1 PONT M >4CY 455 1260 137 60,6 78,6 21,4 6
31-05-2024 g-C|V .5631121  g-A|N (99) cach x teus 1CY              
04-06-2024 g-C|V .5631121  g-A|N (99) cach x teus 1CY 64 324 75,0        
                           
OBSERVATIONS:
21-04-2024 eggs: 1 egg, measured. 
adult: likely mixed pair
02-05-2024 eggs: 2 eggs. Will not be a full clutch.
  adult: female is Herring Gull. Male is Caspian Gull, trapped today. Now g-A|N.
31-05-2024 chicks: 1x ringed.
04-06-2024 chick: g-C|V present. measured.

below: Caspian Gull cachinnans hybrid C|V 1CY, June 04 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst, Mars Muusse & Albert de Jong.

below: Caspian Gull cachinnans hybrid C|V 1CY, May 31 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Merijn Loeve.

date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
02-05-2024 g-A|N .5631218 nest 99 dam 1 PONT M >4CY 455 1260 137 60,6 78,6 21,4 6
31-05-2024 g-C|V .5631121 g-A|N (99) cach x teus 1CY