Juvenile
Slaty-backed Gull September 23rd 2001
Hasaki Ibaragi Japan Especially in photos,
individuals that have darker primaries often resemble vegae or smithsonianus.
But usually, they show
more uniform tone in the field, and this is more obvious in flight.
Typical short winged individual unlike vegae.
1st. summer
Apr. 16th 2001
Worn and faded, very different impressions, compared with juv.in Sep.