Gull Research Organisation

**Herring Gull (argentatus & argenteus)**

(last update: February 11, 2013)

Coordinators:
Jean-Michel Sauvage (France)
Mars Muusse (the Netherlands)

Herring Gull plumages:

HG 1cy July
HG 1cy August
HG 1cy September
HG 1cy October
HG 1cy November
HG 1cy December

HG 2cy January
HG 2cy February
HG 2cy March
HG 2cy April
HG 2cy May
HG 2cy June
HG 2cy July
HG 2cy August
HG 2cy September
HG 2cy October
HG 2cy November
HG 2cy December

HG 3cy January
HG 3cy February
HG 3cy March
HG 3cy April
HG 3cy May
HG 3cy June
HG 3cy July
HG 3cy August
HG 3cy September
HG 3cy October
HG 3cy November
HG 3cy December

HG sub-ad Jan.
HG sub-ad Feb.
HG sub-ad March
HG sub-ad April
HG sub-ad May
HG sub-ad June
HG sub-ad July
HG sub-ad Aug.
HG sub-ad Sept.
HG sub-ad Oct.
HG sub-ad Nov.
HG sub-ad Dec.

HG adult January
HG adult February
HG adult March
HG adult April
HG adult May
HG adult June
HG adult July
HG adult August
HG adult September
HG adult October
HG adult November
HG adult December

Herring Gull (argenteus) K.BMF 1CY-4CY, September 2014 - June 2017, Den Haag - Scheveningen - Heemskerk, the Netherlands.

Green K.BMF, ringed as pullus on July 16 2014 at Kelderhuispolder, Texel (53,01 N; 4,72 E). Project run by Kees Camphuysen.

Recoveries:

Year	Mm	Dd	Location		Lat	Long
2014	7	16	Valley ridge/receiver Kelderhuispolder, Texel	NL	53,01	4,72
2014	7	29	Trail and depot area Kelderhuispolder Texel	NL	53,01	4,72
2014	8	28	Scheveningen, Noorder havenhoofd	NL	52,1	4,27
2014	9	22	Scheveningen, strand noordpier.	NL	52,1	4,27
2015	2	1	Scheveningen, visafslag	NL	52,1	4,27
2015	2	10	Scheveningen, strandsuppletie noordstrand	NL	52,13	4,32
2015	2	10	Scheveningen, strandsuppletie noordstrand	NL	52,13	4,32
2015	2	10	Scheveningen, strandsuppletie noordstrand	NL	52,13	4,32
2015	5	1	Zuiderpark, Den Haag	NL	52,06	4,29
2015	5	6	Zuiderpark, Den Haag	NL	52,06	4,29
2015	5	9	Zuiderpark, Den Haag	NL	52,06	4,29
2015	5	9	Zuiderpark, Den Haag	NL	52,06	4,29
2015	7	7	Strekdam 2 strand Julianadorp-Huisduinen	NL	52,89	4,71
2015	8	21	Katwijk aan Zee	NL	52,22	4,4
2015	8	25	Zuiderpark, Den Haag	NL	52,06	4,29
2015	8	26	Zuiderpark, Den Haag	NL	52,06	4,29
2015	8	30	Zuiderpark, Den Haag	NL	52,06	4,29
2015	9	16	Scheveningen, binnenhavens	NL	52,10	4,27
2015	9	22	Scheveningen havenhoofd zuid; Strand Paal 10	NL	52,08	4,25
2015	11	3	Kijkduin, strand paal 105	NL	52,08	4,23
2016	3	4	Zuiderpark, Den Haag	NL	52,06	4,29
2016	5	6	Koekamp, Den Haag	NL	52,08	4,32
2016	5	9	Katwijk aan Zee uitwatering paal 86	NL	52,21	4,40
2016	5	26	Koekamp, Den Haag	NL	52,08	4,32
2016	5	26	Den Haag, Centraal Station	NL	52,08	4,32
2016	6	24	Kijkduin, strand tussen Scheveningen en -	NL	52,08	4,25
2016	6	25	Kijkduin, strand tussen Scheveningen en -	NL	52,08	4,25
2016	6	30	Kijkduin, strand tussen Scheveningen en -	NL	52,08	4,25
2016	7	5	Koekamp, Den Haag	NL	52,08	4,32
2016	7	10	Kijkduin, strand tussen Scheveningen en -	NL	52,08	4,25
2016	7	18	Scheveningen Westerduinpark; Strand Paal 104	NL	52,08	4,23
2016	7	23	Koekamp, Den Haag	NL	52,08	4,32
2016	7	28	Koekamp, Den Haag	NL	52,08	4,32
2016	7	31	Kijkduin, strand tussen Scheveningen en -	NL	52,08	4,25
2016	8	8	Scheveningen Westerduinpark; Strand Paal 104	NL	52,08	4,23
2016	8	15	Den Haag, Centraal Station	NL	52,08	4,32
2016	9	9	Kijkduin	NL	52,07	4,22
2016	9	11	Ter Heijde, strand paal 110	NL	52,05	4,18
2016	9	12	Ter Heijde, strand paal 110	NL	52,05	4,18
2016	9	26	Kijkduin, strand paal 105	NL	52,08	4,23
2017	1	21	Scheveningen, strand	NL	52,12	4,27

below: Herring Gull (argenteus) K.BMF 4CY, June 02 2017, Heemskerk, the Netherlands.

P1 growing, P2 missing. Small mirror on P10 and thayeri pattern on P9. Note more mature colours when compared to images from January.

below: Herring Gull (argenteus) K.BMF 4CY, January 20-23 2017, Scheveningen, the Netherlands. Picture: Mars Muusse.

Note white tipped outer primaries. Obvious mirror on P10.

below: Herring Gull (argenteus) K.BMF 3CY, March 04 2016, Den Haag, the Netherlands. Picture: Ronald van Oosteroom.

Grey saddle.

below: Herring Gull (argenteus) K.BMF 2CY, September 16 2015, Scheveningen, the Netherlands. Picture: Ted van der Knaap.

P7/P10.

below: Herring Gull (argenteus) K.BMF 2CY, August 21 2015, Katwijk, the Netherlands. Picture: Mars Muusse.

Bird in complete moult: P6/P8. P1-P6 fully grown, P7 length at P2, P8-P10 old juvenile. Secondaries: S1 replaced 2nd gen, other secs old juvenile. Old juevnile tail-feathers heavily worn, soem missing. Moult gap in central GC almost closed.

below: Herring Gull (argenteus) K.BMF 2CY, May 06 2015, Den Haag, the Netherlands. Picture: Ronald van Oosteroom.

Half a year later: all scaps replaced for 2ndf gen. Almost starting the complete moult in summer.

below: Herring Gull (argenteus) K.BMF 1CY, September 22 2014, Scheveningen, the Netherlands. Picture: Leo Snellink.

Completely juvenile plumage.