Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argentatus) adult, February 21 2014, Katwijk, the Netherlands.

No band on P5, broken band on P6 and P7, large mirrors on P9 and P10, thayeri pattern on P9. Such bird represent the paler end of the spectrum in argentatus wingtips. Broken bands on P6 and P7 may indicate some hyperboreus influences?