Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull graellsii BF adult, September 16 2016, Matosinhos beach, 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 - G[BF]
Metallic ring
EURING code - 05910 - www.cr-birding.org/node/1063
Right leg (tibia) Green ring with white two alpha-code
Left leg (tibia) - Black ring
Left leg (tarsus) Metallic ring
Ringer -
Age at first ring - - Date -
Place where ringed - NL
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SPECIES
Type of bird - Larus fuscus
Age & Sexe - Ad. - unknown
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OBSERVATION
Date of the sighting - 16.09.2016 - Time - morning
- my sightings/2016 - 1 - total of my sightings: 1
Place - Matosinhos beach, Matosinhos, Portugal
Coordinates: - 41.176885 – 8.693382
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LIFE HISTORY
Date Location Observer
16.09.2016 - Matosinhos beach, Matosinhos, Portugal – José Marques

Data pending. Probably tibia green ring BF + black ring and metal Arnhem NLA 5.505.183, ringed as breeding adult (>4CY) on May 22 2015 at Maasvlakte (Yangtzehaven), the Netherlands (5158.00 N 401.00 E) by ringers H. Keijser & R.J. Buijs.
At least P5-P10 old, but lack of obvious moult in wing-coverts suggests many more old primaries.