IJmuiden Project - Fred Cottaar ringing team
(last update: January 01, 2023)
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| Y.CHX |
| NLA 5.506.771 |
| Lesser B-backed Gull |
| male, adult |
| ringed: May 22 2017 |
| Forteiland IJmuiden, Centrale vlak |
| Relations: |
| Y.DPH female, partner 2025 |
| Y.FLX offspring 2025 |
| NLA 5.643.105 offspring 2025 |
| NLA 5.643.106 offspring 2025 |
| Y.DPH female, partner 2024 |
| NLA 5.633.272 offspring 2024 |
| NLA 5.633.273 offspring 2024 |
| Y.DPH female, partner 2023 |
| Y.DSC offspring 2023 |
| Y.CUJ female, partner 2022 |
| female unringed, partner 2019 |
| female unringed, partner 2018 |
Lesser Black-backed Gull (graellsii) Y.CHX adult, August 2020, IJmuiden, the Netherlands. Picture: Mars Muusse.
Ringed as breeding adult in season 2017 at Forteiland, IJmuiden. Ringed by Fred Cottaar ringing team.
below: Lesser Black-backed Gull (graellsii) Y.CHX >7CY, August 20 2020, IJmuiden, the Netherlands. Picture: Mars Muusse.
P3/P6.
below: Lesser Black-backed Gull (graellsii) Y.CHX >7CY, August 19 2020, IJmuiden, the Netherlands. Picture: Mars Muusse.
Life history until October 2020:
| 2017 | 5 | 22 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | Fred | Cottaar | caught on nest 3 eggs |
| 2017 | 5 | 29 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2017 | 6 | 2 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 1 chick. |
| 2017 | 6 | 12 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. With 3 chicks. |
| 2017 | 6 | 19 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 3 chicks. |
| 2017 | 7 | 3 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 1 chick |
| 2017 | 7 | 10 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 2 begging juv. in territory |
| 2017 | 8 | 18 | Forteilandkolonie IJmuiden, basaltblokken/wier | NL | 52,46 | 4,58 | Fred | Cottaar | resting |
| 2017 | 8 | 20 | Forteilandkolonie IJmuiden, pier | NL | 52,46 | 4,58 | Fred | Cottaar | resting |
| 2018 | 4 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial, female unringed |
| 2018 | 4 | 30 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | choking met ongeringde partner |
| 2018 | 5 | 7 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Choking with unringed partner |
| 2018 | 5 | 14 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. |
| 2018 | 5 | 18 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2018 | 5 | 25 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. |
| 2018 | 5 | 28 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2018 | 6 | 3 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 2 small chicks. |
| 2018 | 6 | 4 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2018 | 6 | 11 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 2 small chicks. |
| 2018 | 6 | 18 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2018 | 6 | 25 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. With 2 large chicks. |
| 2018 | 7 | 2 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. with unringed female and unringed pullus |
| 2018 | 7 | 9 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. With 1 large young. |
| 2018 | 7 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 1 juv. |
| 2018 | 7 | 23 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2019 | 3 | 29 | Forteilandkolonie IJmuiden, noordvlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2019 | 4 | 23 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | feeding unringed female |
| 2019 | 4 | 29 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial, copulating with unringed female |
| 2019 | 5 | 6 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | feeding unringed female big fish |
| 2019 | 5 | 10 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | next to partner who is sitting on nest |
| 2019 | 5 | 13 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | nest |
| 2019 | 5 | 24 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| 2019 | 5 | 27 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| 2019 | 6 | 3 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| 2019 | 6 | 7 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 2 chicks |
| 2019 | 6 | 14 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial, female unringed |
| 2019 | 6 | 17 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | copulating witrg unringed female |
| 2019 | 6 | 24 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | with begging unringed female |
| 2019 | 9 | 22 | strand IJmuiden | NL | 52,44 | 4,55 | Jan | Zorgdrager | IJmuiden, Kennemerstrand |
| 2019 | 10 | 16 | strand IJmuiden | NL | 52,44 | 4,55 | Martijn | Los | Photo provided |
| 2019 | 11 | 9 | Ciboure Pyrénées Atlantiques | F | 43,37 | -1,63 | Didier | Domec | Photo provided, very faint winter spotting ... if any! |
| 2020 | 3 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2020 | 5 | 11 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| 2020 | 5 | 26 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| 2020 | 6 | 9 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 1 chick and unringed partner. |
| 2020 | 6 | 12 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With 1 chick. |
| 2020 | 7 | 21 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | Jan | Zorgdrager | |
| 2020 | 8 | 16 | Forteilandkolonie IJmuiden, basaltblokken/wier | NL | 52,46 | 4,58 | Maarten van | Kleinwee | |
| 2020 | 8 | 19 | strand IJmuiden | NL | 52,44 | 4,55 | Mars | Muusse | Plumage from photo in Muusse collection |
| 2020 | 8 | 20 | strand IJmuiden | NL | 52,44 | 4,55 | Mars | Muusse | Plumage from photo in Muusse collection |
| 2020 | 9 | 12 | haven IJmuiden | NL | 52,46 | 4,59 | José | Verbeek-Cottaar | Felison terminal. |
| 2020 | 9 | 12 | strand IJmuiden | NL | 52,44 | 4,55 | Annelies | Marijnis | |
| 2020 | 10 | 4 | haven IJmuiden | NL | 52,46 | 4,59 | Marcel | Slaterus | Photo provided, Monnikendamkade |