Gulls in NW Europe

(last update: September 25, 2011 )

Herring Gull argenteus BLB H-137037 adult, September 30 2016, Westkapelle, the Netherlands.

Ringed as adult (>5CY) on January 23 2005 at Wenduine Beach, Belgium. In 2016 this is 16+CY.

History:

30-09-2016 N287 5-7, 4361 Westkapelle, Nederland Muusse, Kleinwee, Marijnis
05-05-2013 Strand Domburg, Domburg, Zeeland, NL Valkenburg
23-01-2005 Astridplein 7-17, De Haan, Wenduine, Flemish Region, BE (BLB) Belgisch Ringwerk

Not ringed as pullus, so not necessarily of local argenteus population, but in all respects argenteus, not argentatus. The primary moult score: P7>P6, almost fully grown and P10 old in the left wing. P10 dropped in right wing. 

Primary moult scores in adult Herring Gulls at Scheveningen.

. 05-10-2000 07-10-2000# 07-10-2000* 12-10-2000 14-10-2000 21-10-2000 26-10-2000
P5 1 1 - 1 - - -
P6 32 19 28 5 4 1 -
P7 51 69 82 69 106 32 24
P8 7 19 15 29 69 53 87
P9 1 - - 2 2 4 18
P10 - - - - - - -
           
n: 92 108 125 106 181 90 129
average: 6,7 7,0 6,9 7,3 7,4 7,7 8,0
95% CID: 0,14 0,12 0,10 0,12 0,08 0,12 0,10
SD: 0,66 0,63 0,58 0,61 0,55 0,58 0,57

Notes:
# high tide at Scheveningen beach on October 07 2000,
* low tide at Scheveningen beach on October 07 2000,
95% CID: Confidence Interval of the Difference,
SD: Standard Deviation.