IJmuiden Project - Fred Cottaar, José Verbeek, Maarten van Kleinwee & Mars Muusse
(last update: January 01, 2023)
| back to INDEX |
| RWN |
| GBT GG77605 |
| Lesser B-backed Gull |
| female, pullus |
| ringed: July 16 2005 |
| Orfordness, UK, now: |
| Forteiland IJmuiden, Zuidvlak |
| Relations: |
| Y.CTW male, partner 2020 |
| Y.CTW male, partner 2019 |
| male unringed, partner 2018 |
| male unringed, partner 2017 |
| male unringed, partner 2016 |
| male unringed, partner 2015 |
| - |
| - |
Lesser Black-backed Gull (graellsii) RWN adult, April 23 2019, IJmuiden, the Netherlands. Picture: Mars Muusse.
Red RWN ringed as pullus on July 16 2005 at Orfordness, Suffolk, UK (52.05N, 01.34E), a project run by Mike Marsh.
Female.
below: Lesser Black-backed Gull (graellsii) RWN adult, April 23 2019, IJmuiden, the Netherlands. Picture: Mars Muusse.
The unringed male partner in the background was trapped later in season 2019 and ringed g-Y.CTW.
Life history until July 2020:
| RWN | GG77605 | 16-7-2005 | Orfordness, Suffolk | England | 52.05N | 01.34E | RINGING DATA | RINGED AS PULLUS |
| RWN | GG77605 | 30-8-2005 | Gloucester Landfill, Hempsted, Gloucester | England | 51.51N | 02.16W | J.Sanders | |
| RWN | GG77605 | 24-11-2005 | Agadir | MOROCCO | 30.26N | 09.36W | A.Talamelli | |
| RWN | GG77605 | 8-12-2005 | Oued Massa, near Agadir | MOROCCO | 30.05N | 09.40W | C.Feigne | |
| RWN | GG77605 | 18-5-2008 | Orfordness, Suffolk | England | 52.05N | 01.34E | MM/DC | gate 7-8 beach |
| RWN | GG77605 | 13-6-2008 | Amsterdam, Noord-Holland | NETHERLANDS | 52.21N | 04.55E | W.van der Waal | |
| RWN | GG77605 | 4-5-2010 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | K & J.Verbeek | in breeding colony |
| RWN | GG77605 | 9-5-2011 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | K & J.Verbeek/F.Cottaar | in breeding colony |
| RWN | GG77605 | 3-7-2011 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | in breeding colony |
| RWN | GG77605 | 2-4-2012 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | in breeding colony, = female |
| RWN | GG77605 | 4-5-2012 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | confirmed breeding |
| RWN | GG77605 | 21-5-2012 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/K & J.Verbeek | controlled, on nest with 3 eggs |
| RWN | GG77605 | 29-6-2013 | Slotervaart, Amsterdam, Noord-Holland | NETHERLANDS | 52.21N | 04.49E | W.van der Waal | |
| RWN | GG77605 | 9-8-2013 | Seven Hills, Little Livermere, Suffolk | England | 52.20N | 00.44E | L.Gregory | |
| RWN | GG77605 | 19-5-2014 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee | |
| RWN | GG77605 | 26-5-2014 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | confirmed breeding, nest with 3 eggs |
| RWN | GG77605 | 2-6-2014 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/M.van Kleinwee | with 2 chicks |
| RWN | GG77605 | 11-7-2014 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | near territory but no juvs seen |
| RWN | GG77605 | 13-8-2014 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | near territory but no juvs seen |
| RWN | GG77605 | 8-3-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar | at breeding colony |
| RWN | GG77605 | 9-3-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | at breeding colony |
| RWN | GG77605 | 20-4-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee/F.Cottaar/J.Verbeek-Cottaar | in 2014 territory |
| RWN | GG77605 | 18-5-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee/F.Cottaar/J.Verbeek-Cottaar | confirmed breeding - eggs, male = unringed |
| RWN | GG77605 | 26-5-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee/F.Cottaar/J.Verbeek-Cottaar | at nest with unringed partner |
| RWN | GG77605 | 29-5-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee/F.Cottaar/J.Verbeek-Cottaar | with 2 chicks + 1 hatching |
| RWN | GG77605 | 12-6-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | with 1+ chick |
| RWN | GG77605 | 21-6-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | with 1+ chick |
| RWN | GG77605 | 25-6-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | with one begging chick |
| RWN | GG77605 | 27-6-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 2-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 4-6-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 6-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | M.van Kleinwee/F.Cottaar/J.Verbeek-Cottaar | at nest site |
| RWN | GG77605 | 10-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 17-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 20-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 24-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 26-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory, with fledged juv |
| RWN | GG77605 | 28-7-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory |
| RWN | GG77605 | 3-8-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory, with begging juv |
| RWN | GG77605 | 8-8-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory, with begging juv |
| RWN | GG77605 | 14-8-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory, with unringed male |
| RWN | GG77605 | 21-8-2015 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | F.Cottaar/J.Verbeek-Cottaar | in territory, with unringed male |
| RWN | GG77605 | 1-4-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in same territory as previous years |
| RWN | GG77605 | 8-4-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 15-4-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 23-4-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 2-5-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | nest with 3 eggs, paired with unringed male |
| RWN | GG77605 | 9-5-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 13-5-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 20-5-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 27-5-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 10-6-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 3-7-2016 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 1-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 3-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 11-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 24-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory, with unringed male |
| RWN | GG77605 | 26-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 27-3-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 10-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | sleeping at 2016 nest location |
| RWN | GG77605 | 12-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 14-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 17-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 21-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory, with unringed male |
| RWN | GG77605 | 24-4-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | at nest location, with unringed male |
| RWN | GG77605 | 1-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | 3 eggs in nest (one blue again) |
| RWN | GG77605 | 4-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 6-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 7-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 8-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | at nest with 3 eggs |
| RWN | GG77605 | 14-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory |
| RWN | GG77605 | 15-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | nest with 3 eggs |
| RWN | GG77605 | 22-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 28-5-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | with at least one chick |
| RWN | GG77605 | 5-6-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in territory, with unringed male, no sign of chicks |
| RWN | GG77605 | 26-7-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 18-8-2017 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 12-3-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 17-3-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | J.Verbeek | |
| RWN | GG77605 | 19-4-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | with unringed male in 2017 territory |
| RWN | GG77605 | 20-4-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in 2017 territory |
| RWN | GG77605 | 14-5-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | on nest with 3 eggs (none blue) |
| RWN | GG77605 | 18-5-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 21-5-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in 2017 territory |
| RWN | GG77605 | 24-6-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in 2017 territory, no chicks seen |
| RWN | GG77605 | 1-7-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | in 2017 territory, no chicks seen |
| RWN | GG77605 | 9-7-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 27-7-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 29-7-2018 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Research Team | |
| RWN | GG77605 | 15-1-2019 | El Jadida landfill, near El Jadida | MOROCCO | 33.15N | 08.30W | M.van Kleinwee/J.de Vries | |
| RWN | GG77605 | 8-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2018 territory |
| RWN | GG77605 | 15-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 17-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2018 territory 2018 with unringed male |
| RWN | GG77605 | 21-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 27-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 29-3-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | In territory wtih unringed male |
| RWN | GG77605 | 6-4-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | nest building. |
| RWN | GG77605 | 8-4-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 12-4-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2018 territory |
| RWN | GG77605 | 15-4-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 26-4-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, male unringed, grasspulling |
| RWN | GG77605 | 6-5-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | on nest with 3 eggs, 2 of which blueish. |
| RWN | GG77605 | 17-5-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with Green YCTW (partner ringed 10/05/2019), 3 eggs in nest. |
| RWN | GG77605 | 19-5-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory |
| RWN | GG77605 | 23-5-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | male on nest |
| RWN | GG77605 | 31-5-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory |
| RWN | GG77605 | 9-6-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | 3 chicks |
| RWN | GG77605 | 16-6-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | no chicks seen |
| RWN | GG77605 | 4-7-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 21-7-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | |
| RWN | GG77605 | 26-7-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory |
| RWN | GG77605 | 29-7-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with partner Green YCTW in territory |
| RWN | GG77605 | 4-8-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with partner Green YCTW in territory |
| RWN | GG77605 | 8-8-2019 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory |
| RWN | GG77605 | 16-3-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2019 territory |
| RWN | GG77605 | 19-3-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2019 territory |
| RWN | GG77605 | 27-3-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | J.Zorgdrager | injured left leg |
| RWN | GG77605 | 28-3-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in 2019 territory, with green YCTW |
| RWN | GG77605 | 2-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW, still sore leg |
| RWN | GG77605 | 5-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW |
| RWN | GG77605 | 9-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW |
| RWN | GG77605 | 10-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | J.Zorgdrager | limping, injured left leg |
| RWN | GG77605 | 22-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW |
| RWN | GG77605 | 27-4-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW, still sore leg |
| RWN | GG77605 | 11-5-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory, with partner Green YCTW, still sore leg |
| RWN | GG77605 | 18-5-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | nest located (same as in 2019), no blue egg this time |
| RWN | GG77605 | 26-5-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | on nest with 3 eggs |
| RWN | GG77605 | 9-6-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with 3 chicks |
| RWN | GG77605 | 12-6-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with 3 chicks |
| RWN | GG77605 | 21-6-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with 3 large chicks |
| RWN | GG77605 | 24-6-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | feeding 3 large chicks |
| RWN | GG77605 | 29-6-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | in territory |
| RWN | GG77605 | 14-7-2020 | Forteiland, Ijmuiden, Noord-Holland | NETHERLANDS | 52.28N | 04.34E | Ijmuiden Gull Team | with partner Green YCTW and feeding 3 large chicks |