IJmuiden Project - Fred Cottaar ringing team
(last update: January 01, 2023)
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| Y.FTV (was Y.AUW) |
| NLA 5.426.662 |
| Lesser B-backed Gull |
| female, adult |
| ringed: May 30 2011 |
| Forteiland IJmuiden, - |
| ringed: May 15 2026 |
| Forteiland IJmuiden, Duintjes Oost |
| Relations: |
| Y.FRU male, partner 2026 |
| male unringed, partner 2021 |
| male unringed, partner 2020 |
| male unringed, partner 2019 |
| male unringed, partner 2018 |
| male unringed, partner 2017 |
| Y.AJN male, partner 2017 |
| Y.AJN male, partner 2015 |
| Y.AJN male, partner 2013 |
| Y.AJN male, partner 2012 |
| Y.AJN male, partner 2011 |
Lesser Black-backed Gull (graellsii) Y.FTV (was Y.AUW) adult, 2016 - 2026, the Netherlands. Picture: Lou Spoor, Maarten van Kleinwee & Mars Muusse.
Ringed as breeding adult in season 2002 at Middensluiseiland, IJmuiden.
Ringed by Fred Cottaar ringing team.
Ringed as breeding adult in season 2011 at Forteiland, IJmuiden.
Plastic ring added. Ringed by Fred Cottaar ringing team.
Ringed as breeding adult (>29CY) in season 2026 at Forteiland, IJmuiden. Plastic ring replaced. Ringed by Fred Cottaar ringing team.
below: Lesser Black-backed Gull (graellsii) Y.FTV (was Y.AUW) >17CY, May 15 2026, IJmuiden, the Netherlands. Picture: IJmuiden Ringing Team.
| nest | partner | wing | tarsus | head-bill | bill | gonys | greytone | mass | swab code |
| YAUW | YFRU | 409 | - | 114,4 | - | - | - | 747 | - |
In 2026, partner ringed as well: YFRU.
below: Lesser Black-backed Gull (graellsii) Y.AUW >17CY, April 10 2026, IJmuiden, the Netherlands. Picture: Mars Muusse.
below: Lesser Black-backed Gull (graellsii) Y.AUW >11CY, March 06 2020, Amsterdam, the Netherlands. Picture: Lou Spoor.
below: Lesser Black-backed Gull (graellsii) Y.AUW >10CY, April 23 2019, IJmuiden, the Netherlands. Picture: Mars Muusse.
below: Lesser Black-backed Gull (graellsii) Y.AUW >8CY, April 23 2017, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.
below: Lesser Black-backed Gull (graellsii) Y.AUW >8CY, April 10 2017, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.
Female Green YAUW with male partner Green YAJN.
below: Lesser Black-backed Gull (graellsii) Y.AUW >7CY, June 06 2016, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.
Life history until March 2022:
| YAUW | Geringd | 2011 | 5 | 30 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | op nest gevangen / 3 ei |
| YAUW | Gezien | 2011 | 5 | 30 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José | Verbeek-Cottaar | |
| YAUW | Gezien | 2011 | 6 | 6 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | partner YAJN / 3 kuikens |
| YAUW | Gezien | 2011 | 6 | 27 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | min. 1 kuiken |
| YAUW | Gezien | 2011 | 7 | 3 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred | Cottaar | 3 kuikens |
| YAUW | Gezien | 2011 | 12 | 3 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2011 | 12 | 4 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2011 | 12 | 10 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2012 | 1 | 5 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2012 | 1 | 7 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2012 | 1 | 15 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | Miguel Juan, Delfín González & Juan M. Ruiz |
| YAUW | Gezien | 2012 | 1 | 21 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2012 | 1 | 29 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Delfin | Gonzalez | Photo provided |
| YAUW | Gezien | 2012 | 2 | 4 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2012 | 3 | 2 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José & Kees | Verbeek | |
| YAUW | Gezien | 2012 | 4 | 2 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José & Kees | Verbeek | |
| YAUW | Gezien | 2012 | 4 | 16 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | bedelt bij partner YAJN / paring |
| YAUW | Gezien | 2012 | 4 | 23 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José & Kees | Verbeek | |
| YAUW | Gezien | 2012 | 5 | 17 | IJmondhaven | NL | 52,46 | 4,57 | José & Kees | Verbeek | |
| YAUW | Gezien | 2012 | 7 | 29 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred | Cottaar | poetsend |
| YAUW | Gezien | 2012 | 11 | 10 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | About 6.000-7.000 LBBGs at landfill site |
| YAUW | Gezien | 2013 | 1 | 4 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Miguel | Juan | Miguel Juan & Delfín González |
| YAUW | Gezien | 2013 | 4 | 13 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred | Cottaar | |
| YAUW | Gezien | 2013 | 4 | 15 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred | Cottaar | partner YAJN |
| YAUW | Gezien | 2013 | 4 | 22 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | partner YAJN / territoriaal |
| YAUW | Gezien | 2013 | 5 | 6 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | F & K | Cottaar-Verbeek ringteam | partner YAJN op nest / paring |
| YAUW | Gezien | 2013 | 12 | 1 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Delfin | Gonzalez | Photo provided |
| YAUW | Gezien | 2014 | 2 | 22 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | Photo provided; bright summer plumage |
| YAUW | Gezien | 2014 | 11 | 8 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | Photo provided; About 8.000 LBBGs at landfill site |
| YAUW | Gezien | 2014 | 11 | 10 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | About 8000 gulls on landfill site |
| YAUW | Gezien | 2015 | 1 | 11 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | About 8000 gulls on landfill site |
| YAUW | Gezien | 2015 | 4 | 13 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred & José | Cottaar-Verbeek | vlakte centraal, wordt grote vis gevoerd door man YAJN, choking, paring |
| YAUW | Gezien | 2015 | 4 | 20 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred & José | Cottaar-Verbeek | in territorium, paring met YAJN |
| YAUW | Gezien | 2015 | 4 | 20 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Maarten van | Kleinwee | Photo provided, Vrouwtje: parend met YAJN. Kolonie. |
| YAUW | Gezien | 2015 | 5 | 29 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José | Verbeek-Cottaar | M/ 2 pullen. |
| YAUW | Gezien | 2015 | 6 | 22 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | José | Verbeek-Cottaar | M/ 2 pullen. |
| YAUW | Gezien | 2015 | 6 | 29 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Maarten van | Kleinwee | Geen handpenrui. |
| YAUW | Gezien | 2015 | 7 | 28 | IJmondhaven | NL | 52,46 | 4,57 | Fred | Cottaar | water drinkend uit zoetwaterplas |
| YAUW | Gezien | 2015 | 12 | 5 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2015 | 12 | 20 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | Miguel Juan, Delfín González & Juan M. Ruiz |
| YAUW | Gezien | 2016 | 2 | 6 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | Photo provided, Delfín González & Juan M. Ruiz, about 10.000 LBBGs at landfill site |
| YAUW | Gezien | 2016 | 2 | 13 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | 10000 LBBG at landfill site |
| YAUW | Gezien | 2016 | 4 | 11 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred & José | Cottaar-Verbeek | territorial |
| YAUW | Gezien | 2016 | 4 | 11 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Maarten van | Kleinwee | Colony center. |
| YAUW | Gezien | 2016 | 4 | 18 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred & José | Cottaar-Verbeek | territorial, begging by male YAJN |
| YAUW | Gezien | 2016 | 5 | 2 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Fred & José | Cottaar-Verbeek | territorial |
| YAUW | Gezien | 2016 | 6 | 6 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | Maarten van | Kleinwee | Flying past heli-platform. P1 missing. Score: 1 (1000000000). |
| YAUW | Gezien | 2016 | 6 | 25 | Erasmusgracht, Amsterdam | NL | 52,37 | 4,83 | Bep | Scheen | Photo provided |
| YAUW | Gezien | 2016 | 11 | 12 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2017 | 1 | 2 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | About 8000 LBBG at the landfill site |
| YAUW | Gezien | 2017 | 3 | 20 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | in territory 2016, male YAJN |
| YAUW | Gezien | 2017 | 4 | 10 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Mew-calling and walking in parallel with YAJN. |
| YAUW | Gezien | 2017 | 4 | 24 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2017 | 5 | 1 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| YAUW | Gezien | 2017 | 5 | 6 | IJmondhaven | NL | 52,46 | 4,57 | José | Verbeek-Cottaar | O/ Poetsend. |
| YAUW | Gezien | 2017 | 5 | 8 | IJmuiden, Forteiland | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Flying past heli platform. |
| YAUW | Gezien | 2017 | 5 | 14 | Forteilandkolonie IJmuiden, basaltblokken/wier | NL | 52,46 | 4,58 | Fred | Cottaar | preening |
| YAUW | Gezien | 2017 | 5 | 22 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2017 | 5 | 29 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2017 | 6 | 2 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2017 | 6 | 4 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | choking with unringed partner |
| YAUW | Gezien | 2017 | 6 | 5 | Forteilandkolonie IJmuiden, zuidwestvlak | NL | 52,46 | 4,58 | Fred | Cottaar | |
| YAUW | Gezien | 2017 | 7 | 14 | IJmondhaven | NL | 52,46 | 4,57 | Fred | Cottaar | preening |
| YAUW | Gezien | 2017 | 7 | 24 | IJmondhaven | NL | 52,46 | 4,57 | José | Verbeek-Cottaar | |
| YAUW | Gezien | 2017 | 11 | 11 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | |
| YAUW | Gezien | 2018 | 2 | 17 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | David | Fernandez | Observers Juan M. Ruiz & David Fernández |
| YAUW | Gezien | 2018 | 4 | 9 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2018 | 4 | 16 | Forteilandkolonie IJmuiden, talud noord | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | On stones along water edge, later in Colony Centre. |
| YAUW | Gezien | 2018 | 4 | 23 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Photo provided. |
| YAUW | Gezien | 2018 | 4 | 30 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2018 | 7 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2018 | 7 | 23 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2018 | 10 | 28 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | Juan M. | Ruiz | With David Fernandez, 8000 LBBGs at landfill site |
| YAUW | Gezien | 2018 | 12 | 29 | Colmenar Viejo, Vertedero, Madrid, landfill site | ESP | 40,65 | -3,8 | David | Fernandez | |
| YAUW | Gezien | 2019 | 3 | 22 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | Photo provided, exact same location as YBJD in 2018 |
| YAUW | Gezien | 2019 | 3 | 23 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | Photo provided, exact same location as YBJD in 2018 |
| YAUW | Gezien | 2019 | 3 | 24 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | Photo provided, exact same location as YBJD in 2018; displaying with unringed partner |
| YAUW | Gezien | 2019 | 3 | 26 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | Photo provided, exact same location as YBJD in 2018; with unringed female partner, vocal displays |
| YAUW | Gezien | 2019 | 3 | 27 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | With unringed partner |
| YAUW | Gezien | 2019 | 3 | 28 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | With unringed partner. preening |
| YAUW | Gezien | 2019 | 3 | 29 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | in territory 2018 |
| YAUW | Gezien | 2019 | 3 | 29 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | First feeding on bread, later on usual bridge, with other adult, perhaps not the partner; no sightings earl April |
| YAUW | Gezien | 2019 | 4 | 8 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2019 | 4 | 23 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | in territory 2018 |
| YAUW | Gezien | 2019 | 4 | 26 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | With unringed partner, not seen here for almost a month |
| YAUW | Gezien | 2019 | 4 | 29 | Forteilandkolonie IJmuiden, noordvlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| YAUW | Gezien | 2019 | 5 | 6 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | begging by unringed male |
| YAUW | Gezien | 2019 | 5 | 10 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2019 | 5 | 17 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | nest 3 eggs |
| YAUW | Gezien | 2019 | 5 | 27 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2019 | 5 | 31 | Forteilandkolonie IJmuiden, basaltblokken/wier | NL | 52,46 | 4,58 | Fred | Cottaar | preening |
| YAUW | Gezien | 2019 | 6 | 3 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2019 | 6 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 1 chick |
| YAUW | Gezien | 2020 | 3 | 6 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,8 | Lou | Spoor | Photo provided, exact same location in 2019; 16 days earlier |
| YAUW | Gezien | 2020 | 3 | 6 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, exactly the same location as in 2019; 16 days earlier |
| YAUW | Gezien | 2020 | 3 | 7 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | |
| YAUW | Gezien | 2020 | 3 | 8 | IJmondhaven | NL | 52,46 | 4,57 | Maarten van | Kleinwee | Photo provided. Seen from 10:30hrs. Resting. Forteiland completely empty between 07:45hrs and 14:30hrs. |
| YAUW | Gezien | 2020 | 3 | 8 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided. Another LBBG close by, but no partner rituals. |
| YAUW | Gezien | 2020 | 3 | 9 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | |
| YAUW | Gezien | 2020 | 3 | 14 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided |
| YAUW | Gezien | 2020 | 3 | 15 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, 10:28 back on favorite location, alone; 13:12 on bridge with LBBG metal ring ...032 |
| YAUW | Gezien | 2020 | 3 | 15 | Akerpolder, Amsterdam | NL | 52,34 | 4,79 | Lou | Spoor | 10:22 Foraging on bread, 600 yds. from favorite location |
| YAUW | Gezien | 2020 | 3 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2020 | 3 | 16 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | |
| YAUW | Gezien | 2020 | 3 | 19 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | |
| YAUW | Gezien | 2020 | 3 | 20 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, standing alone |
| YAUW | Gezien | 2020 | 3 | 23 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided |
| YAUW | Gezien | 2020 | 4 | 24 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | begging by unringed male |
| YAUW | Gezien | 2020 | 5 | 4 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2020 | 5 | 11 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | nest 2 eggs |
| YAUW | Gezien | 2020 | 5 | 18 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | nest 2 ei |
| YAUW | Gezien | 2020 | 6 | 9 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | Nest control: empty nest. |
| YAUW | Gezien | 2020 | 6 | 12 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2020 | 6 | 15 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | With partner. |
| YAUW | Gezien | 2020 | 6 | 22 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | 3 eggs, second clutch !! |
| YAUW | Gezien | 2020 | 7 | 14 | Erasmusgracht, Amsterdam | NL | 52,37 | 4,83 | Bep | Scheen | |
| YAUW | Gezien | 2021 | 3 | 1 | Admiralengracht, Amsterdam | NL | 52,37 | 4,85 | Lou | Spoor | Photo provided |
| YAUW | Gezien | 2021 | 3 | 29 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2021 | 4 | 3 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, on the same spot as in March 2019 waiting for partner |
| YAUW | Gezien | 2021 | 4 | 4 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Suzan Pluim | Mentz | Photo provided |
| YAUW | Gezien | 2021 | 4 | 5 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided |
| YAUW | Gezien | 2021 | 4 | 5 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, with unringed partner |
| YAUW | Gezien | 2021 | 4 | 6 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | Photo provided, other LBBG that comes near chased by unringed partner |
| YAUW | Gezien | 2021 | 4 | 9 | Jan van Zutphenplantsoen, Osdorp, Amsterdam | NL | 52,35 | 4,80 | Lou | Spoor | With unringed partner |
| YAUW | Gezien | 2021 | 4 | 12 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | in territory, choking with unringed partner |
| YAUW | Gezien | 2021 | 4 | 16 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | territorial |
| YAUW | Gezien | 2021 | 4 | 19 | Forteilandkolonie IJmuiden, zuidwestvlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | |
| YAUW | Gezien | 2021 | 4 | 26 | Forteilandkolonie IJmuiden, centrale vlak | NL | 52,46 | 4,58 | IJmuiden meeuwen | team | in territory |
| YAUW | Gezien | 2021 | 6 | 4 | Erasmusgracht, Amsterdam | NL | 52,37 | 4,83 | Bep | Scheen | Photo provided |
| YAUW | Gezien | 2022 | 3 | 14 | Hoekenes, Amsterdam | NL | 52,36 | 4,80 | Frank | Majoor | vanonder hapje uit de W gesleten, Amsterdam op de hoek van Slotervaart en Hoekenesgracht |