Glaucous Gull (Larus hyperboreus), 5cy, 28.7.2008, Scoresby Sund, East Greenland

This Glaucous Gull is aged as being a possible forth summer based the combination of almost complete adult colourations besides a slight immature wash to some wing coverts and the unshed outer primaries. Bare parts have adult-like colours like the renewed feathers and coverts whereas the unshed outer primaries and some retained wing coverts have a brownish wash to it. The gull could also be an adult where coverts and primaries have changed colour due to wear and being sun bleached.