Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull intermedius J976Z 2CY, May 16 2017, Leixões harbour, 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 - N[J976Z]
Metallic ring - 4280359
EURING code - 05910 - www.cr-birding.org/node/1145
Right leg (tarsus) Black ring with a white 5 alpha numeric code
Left leg (tarsus) - Metallic ring
Ringer(s) - Helberg, Morten - Olsen, Kjetil
Age at first ring - 1 cy - Date - 2016.09.03
Place where ringed - Vaterland, Oslo, Akershus & Oslo, Norway
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SPECIES
Type of bird - Larus fuscus
Age & Sexe - immature - Female
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OBSERVATION
Date of the sighting - 16.05.2017 - Time - morning
- my sightings/2017 - 1 - total of my sightings: 1
Place - Leixões harbour, Matosinhos, Portugal
Coordinates: - 41.1823988, -8.6970061
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LIFE HISTORY
Date - Location - Observer
03.09.2016 Vaterland, Oslo, Akershus & Oslo, Norway – ringers
05.09.2016 Vaterland, Oslo, Akershus & Oslo, Norway - Sindre Molværsmyr
07.09.2016 Vaterland, Oslo, Akershus & Oslo, Norway - Morten Helberg - Kjetil Olsen
16.05.2017 - Leixões harbour, Matosinhos, Portugal – José Marques

All visible coverts were replaced in the post-juvenile moult, last winter, the MC row now already bleached. All rectrices and primaries (at least P5-P9) replaced in winter as well. This is what can be expected for fuscus fuscus, but in general the pattern on coverts and posture point to intermedius. New 3rd gen scaps growing in, rather ashy grey, not blackish.