Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans N|8 1CY, 2025, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-N|8 and metal NLA 5.641.060, ringed as pullus Larus cachinnans on May 13 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Mother: adult Caspian Gull.
Father: adult Caspian Gull.
Nest: nest 168-2025. In 2025, G-N|8 & G-N|9 fledged, and the unringed sibling as well. Fledging rate for this nest 2025 = 3,0.
Recoveries:
14-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
30-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
06-08-2025 Zons-Dormagen (Akker), Nordrhein-Westfalen, DUITSLAND 5.107,00 N 649,00 E colourring read Klaus Böhm
Visits and data nest 168-2025.
| 2025 | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST:
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# eggs |
| 168 | cach | cach | 70,8 | 50,5 | 70,4 | 51 | 68,4 | 48,6 | 3 | ||||
| dam: | dam 1 blocks.
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| location: | Nest "rozenbottels": at east end of blocks, between Rose bushes, halfway N-side, 168 sprayed on block.
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| ouders: | same as 2024?
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| ring pulli: | |||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | |
| 13-05-2025 | g-N|8 | 5641060 | 168 | PONT | pullus | 448 | |||||||
| 13-05-2025 | g-N|9 | 5641061 | 168 | PONT | pullus | 441 | |||||||
OBSERVATIONS:
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| 16-03-2025 | nest | 2x cach at blocks in front of nest 168,
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| 23-04-2025 | eggs | 3 eggs, measured,
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| 01-05-2025 | chicks | 2x wet chicks, 3rd maybe hiding
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| adult | 2x Caspian Gull,
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| 08-05-2025 | adult | both partners present
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| 13-05-2025 | pullus | 2x chicks ringed, 3rd not found
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| food | g-N|8 fish bolus
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| Conclusion: g-N|8 & g-N|9 both fledged and unringed sibling as well. 3 out of 3. | |||||||||||||
below: Caspian Gull cachinnans N|8 1CY, June 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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below: Caspian Gull cachinnans N|8 1CY, May 13 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |
| 13-5-2025 | G-N|8 | .5641060 | 168 | PONT | pullus | 448 | Ringed pullus |
