SLATY-BACKED GULL
L.schistisagus, second winter
February 5, 1995, Ventura, CA
note the very dark mantle coming in; pale tips to primaries
(which Western Gull doesn't show even in third winter);
horizontal posture; and pale greater coverts.
and a zoom of the head:
note the pale eye; relatively small, straight,
yet thick/stout bill with pink base to lower mandible; and
the smudge around the eye. For another photo of this bird,
along with a detailed analysis, take a look at
Quiz Gull #7.
photos courtesy of Don DesJardin, copyright 1998
