This immature (first cycle) Mew Gull was observed for a while at Kutras Lake, Redding, during the winter of 2003/2004. Note large dark eye that is 1/2 to 3/4 of bill thickness; thin bi-colored bill, dark at the tip; relatively long wings; solid gray feathers on mantle and scapulars. 12/22/03.
Same bird as pictured above. Observe the pale area covering the outer secondary and inner primary flight feathers. The three outer primaries (P8 - 10) are entirely dark. The secondaries form a dark brown bar at the training edge of the wing. 12/22/03.
Another view of the flying bird. 12/18/03.