Western Gull - Larus occidentalis
Second-years
Western Gull, 2nd winters: Roberts Lake Park, Monterey, California, USA - 11th March 2007
Images of several second year Western Gulls follow. Note that the bill shape, deep, blunt tipped and with large Gonydeal angle, is consistent across these birds.
Western Gull, 2nd winters: various locations on the California coast, USA - November 2009
Note on these birds the mix of new and older scapulars and variability in the both the bill patterns and the extent in which the wing coverts and tertials have been replaced.