Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Tibia ring G-M|C and metal NLA 5.631.181, ringed as pullus Larus cachinnans on May 14 2024 in nest 139-2024 at Lelystad, the Netherlands. Ringed by Mars Muusse (Roland-Jan Buijs ringing team).

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|H (139) cach cach 73 50,7 94,48 72,2 50,6 93,08 73 51 95,60 283,16
2024 # eggs A-egg hatch # ringed chicks # all chicks # fledged chicks comments
  3 15-4-2024 13-5-2024
   
dam: dam 1 east
location: most eastern nest on dam 1. same as 2023, with white/red isolation foam
parents? same as 2023
   
ring pulli: 17-May
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
30-04-2024 g-A|H .5631202 nest 139 PONT M >4CY 464 1127 134,4 54,6 71 21 8
14-05-2024 .5631180 nest 139 PONT 1CY 69          
14-05-2024 .5631181 nest 139 PONT 1CY 75          
04-06-2024 g-M|B .5631180 nest 139 PONT 1CY 159 654 93,7        
04-06-2024 g-M|C .5631181 nest 139 PONT 1CY 155 725 94,4        
04-06-2024 g-M|D .5631136 nest 139 PONT 1CY 154 701 93,8        
                           
OBSERVATIONS:
21-04-2024 eggs: 3 eggs, measured. 
30-04-2024 adults: trapped male Caspian Gull, now g-A|H.
02-05-2024 adults: female cach present at blocks in front of nest site.
07-05-2024 eggs: 3x.
14-05-2024 chicks: 3 chciks: 1x wet chick, 2x ringed, only metal. Chicks 1 day old.
04-06-2024 chicks: 3x ringed, darvic added for 2 birds which had metal already.
food: fish bolus, and 1 crab!

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

date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
30-04-2024 g-A|H .5631202 nest 139 PONT M >4CY 464 1127 134,4 54,6 71 21 8
14-05-2024 .5631180 nest 139 PONT 1CY 69
14-05-2024 .5631181 nest 139 PONT 1CY 75
04-06-2024 g-M|B .5631180 139 PONT 1CY 159 654 93,7
04-06-2024 g-M|C .5631181 139 PONT 1CY 155 725 94,4
04-06-2024 g-M|D .5631136 139 PONT 1CY 154 701 93,8