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| Y.FWR |
| NLA 5.434.272 (old) |
| Lesser B-backed Gull |
| male, pullus |
| ringed: July 02 2007 |
| IJmuiden, Middensluiseiland |
| NLA 5.636.733 (new) |
| male, 20CY |
| ringed: May 22 2026 |
| Forteiland IJmuiden, Duintjes Midden |
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| Relations: |
| - |
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Lesser Black-backed Gull (graellsii) Y.FWR adult, 2026, IJmuiden, the Netherlands. Picture: IJmuiden Ringing Team.
Ringed as pullus in 2007, only metal ring. Ringed by Fred Cottaar ringing team.
Trapped as breeding adult in breeding season 2026 at Forteiland, IJmuiden. Metal ring replaced, and plastic ring added. Ringed by Fred Cottaar ringing team.
below: Lesser Black-backed Gull (graellsii) Y.FWR 20CY, May 22 2026, IJmuiden, the Netherlands. Picture: IJmuiden Ringing Team.
| nest |
partner |
wing |
tarsus |
head-bill |
bill |
gonys |
greytone |
mass |
swab code |
| caught on nest 3 eggs |
- |
427 |
68,2 |
126,2 |
58,2 |
19 |
11 |
893 |
|
CONTROLL. Was NLA 5434272, pullus 2007, IJmuiden. Metal ring replaced.





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