Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Caspian Gull cachinnans 7.8 1CY-2CY, May 2023 - April 2024, Scotand & the Netherlands. Picture: Scott Black, Annelies Marijnis, Thijs Horst & Mars Muusse.

Tibia ring R-7.8 and metal NLA 5.556.456, ringed as pullus Larus cachinnans on May 11 2023 in nest 229-X56A at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team.

Recoveries:
11-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-06-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
15-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
18-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-10-2023 Port Seton (Intertidal Zone), East Lothian, SCHOTLAND 5.558,00 N 257,00 W colourring read Josie Hewitt & Scott Black
31-10-2023 Cockenzie (Haven), East Lothian, SCHOTLAND 5.558,00 N 257,00 W colourring read Josie Hewitt
17-02-2024 Het Zwin (Graaf Leon Lippensdreef), West-Vlaanderen, BELGIE 5.121,00 N 320,00 E colourring read Jan Talloen
03-04-2024 Katwijk aan Zee (Buitenwatering), Zuid-Holland, NL 5.212,00 N 423,00 E colourring read Annelies Marijnis

egg sizes & volume 2023
SPECIES NEST A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume TOTAL NEST: known parents?
cach x cach 229-2023 74 50 93,15 72,7 50,5 93,35 70,2 51,5 93,75 280,24 X56A &cach
ring pulli: 15-mei laying A egg: 10-apr hatch A egg: 8-mei
     
catch: date: metal: darvic: mass: wing: head+bill:      
pullus 11-5-2023 5.556.455 r-7Y -- -- --
pullus 11-5-2023 5.556.456 r-78 -- -- --
pullus 18-5-2023 5.556.410 g-7|U 166 -- 63
pullus 18-5-2023 5.556.455 r-7Y 221 -- 65
pullus 27-5-2023 5.556.410 g-7|U 362 -- --
pullus 27-5-2023 5.556.455 r-7Y 499 -- --
pullus 25-6-2023 5.556.456 r-78 1028 355 128,1
   
229-2023 y[X56A] is breeding in 229 (X56A was at nest 206 in 2022)
dam: dam 2 west
location: 25 mtr east of lighthouse, old Spoonbill nest, between bushes = nest 229-2022 of sub-adults.
breeders: cach x cach
OBSERVATIONS:
09-04-2023 y-X56A present north of dam. (27/4: yX56A not breeding at this nest in 2023).
26-04-2023 eggs: 3 eggs. Measured and water test: A/B/C:all are 90 - tip bottom.
nest: code 229 sprayed on entrance block.
27-04-2023 adult: parent 1 = yX56A
11-05-2023 pulli: 2 chicks ringed, 3rd egg hatching.
13-05-2023 adult: partner 2 is cach.
18-05-2023 pulli: 2 chicks present (R-7Y and unringed one, which is now ringed).
27-05-2023 pulli: 2x ringed birds measured: g-7|U & r-7Y.
18-06-2023 adult: ad yX56A easy at bread.
25-06-2023 pulli: r-78 and g-7|U present.

below: Caspian Gull cachinnans 7.8 2CY, April 03 2024, Katwijk, the Netherlands. Picture: Annelies Marijnis.

below: Caspian Gull cachinnans 7.8 1CY, October 26 2023, Port Seton, East Lothian, Scotland. Picture: Scott Black.

below: Caspian Gull cachinnans 7.8 1CY, July 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 7.8 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 7.8 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.