Gulls in NW Europe
(last update: September 25, 2011
Herring Gull adult E096 (argenteus) September 05 2010, IJmuiden, the Netherlands.
Ringed by Norman van Swelm, yellow E096. P1 to P4 are new and fully grown, P5 is mostly grown, P6 is growing and P7 has been shed. The outer greater coverts are missing, thereby exposing the white base of the underlying secondaries. PMS=26 (P1=5, P2=5, P3=5, P4=5, P5=4, P6=1, P7=1, P8=0, P9=0, P10=0).
