Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) JU818 1CY-3CY, October 2014 - February 2016, IJmuiden, the Netherlands.

CR-Code Black ring with white code: JU818 LBNW(JU818);RBM
Ringing Centre Stavanger Museum (Norway) Ring number 3039485
Species Great Black-backed Gull  Larus marinus
Sex Unknown Age Pullus

Date

Place

Coordinates

Observers

Days/km/°

29.06 2014

Storøytåa, Mandal, Vest-Agder, Norway

57°59'18"N 007°26'10"E

Helberg, Morten

-

16.08 2014

Hirtshals Havn, Tværmolen, Nordjylland, Denmark

57°35'41"N 009°57'38"E

Pedersen, Lars R.

48/156/105

04.10 2014

Haringkade, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'28"N 004°35'14"E

Zorgdrager, Jan

97/641/197

08.10 2014

IJmuiden Zuidpierstrand, Noord-Holland, The Netherlands

52°27'33"N 004°33'04"E

Los, Martijn

101/641/197

15.10 2014

Amsterdamse Waterleidingduinen - strand noord, Noord-Holland, The Netherlands

52°20'45"N 004°30'22"E

Los, Martijn

108/654/197

18.10 2014

IJmuiden Haven, Industriestraat, Noord-Holland, The Netherlands

52°27'26"N 004°35'22"E

Verbeek, José

111/641/197

29.10 2014

katwijk, Zuid-Holland, The Netherlands

52°12'55"N 004°23'58"E

Muusse, Mars

122/670/198

05.11 2014

Loggerstraat west, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'34"N 004°34'54"E

Buijs, Roland-Jan

129/641/197

13.12 2014

Kotterkade West, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'30"N 004°34'52"E

Zorgdrager, Jan

167/641/197

20.12 2014

Kotterkade Midden, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'26"N 004°34'59"E

Altenburg, Ruud; Muusse, Mars

174/641/197

04.01 2015

Kotterkade Oost, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'24"N 004°35'07"E

Verbeek, José

189/641/197

31.01 2015

IJmuiden Noordstrand, Noord-Holland, The Netherlands

52°28'33"N 004°34'18"E

Zwaan, Klaas

216/639/197

31.01 2015

IJmuiden, Trawlerkade, Vissershaven, IJmuiden, Noord-Holland, The Netherlands

52°27'29"N 004°35'37"E

Zorgdrager, Jan

216/641/197

19.02 2015

Kotterkade Midden, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'26"N 004°34'59"E

Altenburg, Ruud; Muusse, Mars

235/641/197

28.02 2015

IJmuiden Noordstrand (Reyndersweg), Noord-Holland, The Netherlands

52°28'05"N 004°33'48"E

Zwaan, Klaas

244/640/197

28.02 2015

Sluisieland, Noord-Holland, The Netherlands

52°27'55"N 004°36'14"E

Cottaar, Fred

244/640/197

05.03 2015

Velsen Beach, Noord-Holland, The Netherlands

52°28'25"N 004°34'19"E

Zorgdrager, Jan

249/639/197

06.03 2015

Wijk aan Zee, noordpier, Noord-Holland, The Netherlands

52°28'05"N 004°33'48"E

Zwaan, Klaas

250/640/197

09.03 2015

Wijk aan Zee, noordpier, Noord-Holland, The Netherlands

52°28'05"N 004°33'48"E

Zwaan, Klaas

253/640/197

03.04 2015

Velsen Beach, Noord-Holland, The Netherlands

52°28'25"N 004°34'19"E

Zorgdrager, Jan

278/639/197

06.04 2015

Wijk aan Zee, noordpier, Noord-Holland, The Netherlands

52°28'05"N 004°33'48"E

Zwaan, Klaas

281/640/197

16.04 2015

Forteiland Westpier, IJmuiden, Noord-Holland, The Netherlands

52°27'50"N 004°34'24"E

Verbeek, José

291/640/197

27.04 2015

Wijk aan Zee - Beach, Noord-Holland, The Netherlands

52°28'21"N 004°34'09"E

van Kleinwee, Maarten

302/640/197

29.04 2015

Forteiland Westpier, IJmuiden, Noord-Holland, The Netherlands

52°27'50"N 004°34'24"E

Verbeek, José

304/640/197

10.05 2015

IJmuiden Strand, Noord-Holland, The Netherlands

52°26'24"N 004°33'29"E

van Kleinwee, Maarten; Zorgdrager, Jan

315/643/197

23.07 2015

Forteiland Zuid, IJmuiden, Noord-Holland, The Netherlands

52°27'51"N 004°34'35"E

Cottaar, Fred

389/640/197

30.07 2015

Loggerstraat oost, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'28"N 004°35'07"E

Cottaar, Fred

396/641/197

05.08 2015

Kotterkade West, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'30"N 004°34'52"E

Altenburg, Ruud; Muusse, Mars; Muusse, Theo

402/641/197

08.08 2015

Kaarweg, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'37"N 004°34'52"E

Zorgdrager, Jan

405/641/197

22.08 2015

IJmuiden Strand, Noord-Holland, The Netherlands

52°26'24"N 004°33'29"E

Muusse, Mars; van Kleinwee, Maarten; Zorgdrager, Jan

419/643/197

27.08 2015

IJmuiden, Felison terminal, Noord-Holland, The Netherlands

52°27'44"N 004°35'10"E

Verbeek, José

424/640/197

28.08 2015

Felison terminal, Vissershaven, IJmuiden, Noord-Holland, The Netherlands

52°27'45"N 004°35'06"E

Cottaar, Fred

425/640/197

02.09 2015

IJmuiden, loggerstraat west, Noord-Holland, The Netherlands

52°27'36"N 004°34'51"E

Zorgdrager, Jan

430/641/197

20.09 2015

IJmuiden, loggerstraat west, Noord-Holland, The Netherlands

52°27'36"N 004°34'51"E

Zorgdrager, Jan

448/641/197

20.09 2015

IJmuiden Strand, Noord-Holland, The Netherlands

52°26'24"N 004°33'29"E

Muusse, Mars

448/643/197

09.11 2015

IJmuiden haven, Noord-Holland, The Netherlands

52°27'30"N 004°35'39"E

Loeve, Merijn

498/641/197

25.11 2015

IJmuiden Jachthaven, Noord-Holland, The Netherlands

52°27'29"N 004°33'34"E

Muusse, Mars

514/641/197

05.12 2015

IJmuiden, Noord-Holland, The Netherlands

52°27'37"N 004°35'26"E

Zwaan, Klaas

524/641/197

05.12 2015

IJmuiden, loggerstraat west, Noord-Holland, The Netherlands

52°27'36"N 004°34'51"E

Zorgdrager, Jan

524/641/197

08.01 2016

Haringkade, Haringhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'28"N 004°35'14"E

Hopman, Fred

558/641/197

08.01 2016

IJmondhaven, IJmuiden, Noord-Holland, The Netherlands

52°27'39"N 004°34'14"E

Verbeek, José

558/641/197

24.02 2016

IJmuiden Haven, Noord-Holland, The Netherlands

52°27'43"N 004°34'52"E

Muusse, Mars; van Kleinwee, Maarten; Zorgdrager, Jan

605/641/197

below: Great Black-backed Gull (Larus marinus) JU818 1st cycle (1CY), October 08 2014, IJmuiden, the Netherlands. Picture: Martijn Los.

US: 1-25%, LS: 0%, TOT SCAPS: 1-25%.

below: Great Black-backed Gull (Larus marinus) JU818 1st cycle (1CY), December 20 2014, IJmuiden, the Netherlands.

Lower row of scapulars still juvenile, other scaps replaced. Replaced body feathers on side of breast and head. Otherwise juvenile plumage.

below: Great Black-backed Gull (Larus marinus) JU818 1st cycle (2CY), February 19 2015, IJmuiden, the Netherlands.

Scapular moult stage more or less stable over the last 2 months.

below: Great Black-backed Gull (Larus marinus) JU818 1st cycle (2CY), April 05 2015, IJmuiden, the Netherlands.

Lower row of scapulars still juvenile. US: 100%, LS:75-99%, TOT SCAPS: 75-99%.

below: Great Black-backed Gull (Larus marinus) JU818 2nd prebasic moult (2CY), August 05 2015, IJmuiden, the Netherlands.

P7/P10. S1-S2 new. Active moult in rectrices.

below: Great Black-backed Gull (Larus marinus) JU818 2nd prebasic moult (2CY), August 22 2015, IJmuiden, the Netherlands.

P7/-.

below: Great Black-backed Gull (Larus marinus) JU818 2nd cycle (2CY), September 20 2015, IJmuiden, the Netherlands.

P9/-. P10 halfway, another example for 2nd gen P10 in GBBG showing a small but distinct mirror.

below: Great Black-backed Gull (Larus marinus) JU818 2nd cycle (2CY), November 25 2015, IJmuiden, the Netherlands.

Limited partial autumn moult. Mirror on P10.

below: Great Black-backed Gull (Larus marinus) JU818 2nd cycle (3CY), February 24 2016, IJmuiden, the Netherlands.

Probably female.