Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull graellsii RLA.S 2CY-3CY, March - July 2016 & September - October 2017, Matosinhos, Portugal. Picture: José Marques.

Please visit José's FLICKR PHOTO STREAM and also José Blog "Seabirds Portugal".

OBSERVATION REPORT
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RINGS
Color ring - B[RLA.S]
Metallic ring - L916321
EURING:
-Age code - 5
-Species code - 05910 - www.cr-birding.org/node/1063
Right leg (tarsus) - Blue ring with a white four alpha code
Left leg (tarsus) - Metallic ring
Ringer - Eric Stienen (INBO)
Age at first ring - Pullus - Date - 2015.07.08
Place where ringed - Zeebrugge, West-Vlaanderen, Belgium
∞
SPECIES
Type of bird - Larus fuscus
Age & Sexe - 1y - unknown
∞
OBSERVATION
Date of the sighting - 12/07/2016 - my sightings/2016 - 4
Place - Leixões harbour, Matosinhos, Portugal
Coordinates: - 41.1823988,-8.6970061
∞
LIFE HISTORY
Date - Location - Observer
08/07/2015 - Zeebrugge (Voorhaven), West-Vlaanderen, Belgium - INBO
25/09/2015 - Oostende (Windmolenwerf), West-Vlaanderen, Belgium - Baert, Jan
03/11/2015 - Póvoa de Varzim, Douro Litoral, Portugal - Hälterlein, Bernd
09/01/2016 - Vila Nova de Gaia (Afurada), Douro Litoral, Portugal - José Marques
11/01/2016 - Vila Nova de Gaia (Strand), Douro Litoral, Portugal – Armando Mota
08/03/2016 - Leixões harbour, Matosinhos, Portugal – José Marques
08/04/2016 - Leixões harbour, Matosinhos Portugal – José Marques
12/07/2016 - Leixões harbour, Matosinhos Portugal – José Marques
19/10/2016 Fuseta, Algarve, Portugal- Hiemstra, Tseard
30/12/2016 Monte Gordo (Strand), Algarve, Portugal - Buijs, Roland-Jan
09/03/2017 Sesimbra (Haven), Estremadura, Portugal - Kleyheeg, Erik
15/09/2017 Matosinhos (Strand), Douro Litoral, Portugal - Marques, José
16/09/2017 Espinho (Strand), Beira Litoral, Portugal- Mota, Luís 
25/09/2017 Leça beach, Matosinhos, Portugal – José Marques
29/09/2017 Leixões harbour, Matosinhos Portugal – José Marques
02/10/2017 Matosinhos (Strand), Douro Litoral, Portugal - Marques, José
15/10/2017 Espinho (Strand), Beira Litoral, Portugal- Mota, Luís

below: Lesser Black-backed Gull graellsii RLA.S 3CY, October 02 2017, Matosinhos beach, Matosinhos, Portugal. Picture: José Marques.

below: Lesser Black-backed Gull graellsii RLA.S 3CY, September 29 2017, Leixões harbour, Matosinhos, Portugal. Picture: José Marques.

below: Lesser Black-backed Gull graellsii RLA.S 3CY, September 25 2017, Leça beach, Matosinhos, Portugal. Picture: José Marques.

P7/P10.

below: Lesser Black-backed Gull graellsii RLA.S 3CY, September 15 2017, Matosinhos beach, Matosinhos, Portugal. Picture: José Marques.

P7/P10.

below: Lesser Black-backed Gull graellsii RLA.S 2CY, July 12 2016, Leixões harbour, Matosinhos, Portugal. Picture: José Marques.

P6 new / P9-P10 old. Compare to April and notice that 2nd gen coverts are not (yet) all mouled again, although an ordinary sequence would already include these feathers.

below: Lesser Black-backed Gull graellsii RLA.S 2CY, April 08 2016, Leixões harbour, Matosinhos, Portugal. Picture: José Marques.

below: Lesser Black-backed Gull graellsii RLA.S 2CY, March 08 2016, Leixões harbour, Matosinhos, Portugal. Picture: José Marques.

Extensive post-juvenile moult in late winter (new coverts relatively fresh and buffish).