| Lesser Black-backed Gull graellsii F986 3CY, June 01 2017, Matosinhos beach, Matosinhos, Portugal. Picture: José Marques.Please visit José's FLICKR PHOTO STREAM and also José Blog "Seabirds Portugal". OBSERVATION REPORT∞
 RINGS
 Color ring - N[F986]
 Metallic ring
 EURING code - 05926 - www.cr-birding.org/node/3719
 Right leg (tarsus) - Metallic  ring
 Left leg (tarsus) - Black ring  with a white four alpha-numeric code
 Ringer - Thijs Valkenburg  [RIAS (Wild animal rehabilitation and investigation centre)]
 Age at first ring - - Date -
 Place where ringed - Quinta de  Marim – Olhão, Portugal
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 SPECIES
 Type of bird - Larus fuscus
 Age & Sexe - immature -  unknown
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 OBSERVATION
 Date of the sighting -  01.06.2017 - Time - morning
 - my sightings/2017 - 1 -  total of my sightings: 1
 Place - Leixões Harbour,  Matosinhos, Portugal
 Coordinates: - 41.176885 –  8.693382
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 LIFE HISTORY
 Date Location Observer
 01.06.2017 Leixões Harbour,Matosinhos, Portugal – José Marques.
 Classic graellsii-type bird. 
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