Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull 2cy, July 18 2013, Noordwijk, the Netherlands.

Two birds in active moult / complete moult in summer months: P5/P8. P6 about 2/3 its final length.

Many coverts renewed. Missing central greater coverts expose base on secondaries lying underneath. Note greater covert row have two moult waves, one starting at outer feathers and another from inside.