Slaty-backed Gull Larus schistisagus



This is the only breeding large gull species in Japan. They breed in northern Japan and  Okhotsk coasts, and are widespread in winter Japan.

Adult winter Dec.4th 2008 New
Adult winter
Adult winter (spread wings)
Adult winter
2 dark-eyed adults
Adult winter
Adult winter
Adult winter
Adult-3rd winter (spread wings)
Adult/subadult (spread wings)
Adult, 3rd winter, 1st winter
Adult winter
Adult winter, flying
Adult winter
Adult winter
Adult/1st winter
Adult winter
Adult/1st winter
Adult winter
Adult
Adult/3rd/2nd 
3rd winter Dec.4th 2008New
4th-winter Dec.4th 2008New
3rd winter Dec.4th 2008New
Ad/4th/3rd winter Nov. 23rd 2008
3rd and adult winter
4th-winter/juvenile 
2nd winter
2nd winter,
3rd winter 3rd/4th winter
2nd winter
Sub-adult
3rd summer to 4th winter
2nd winter 
Juv/1st winterJan 15th 2008
Juv/1st winterFeb. 16th 2007
Juv/1st winterFeb. 3rd 2007
Juv/1st winter Nov. 1st 2006
1st winter/summer
Juv/1st winter, adult
Juv/1st winter (flying)
Juv/1st winter, 2nd winter
Juv/1st winter
Juv/1st winter
Juvenile
Juvenile
1st winter
juvenile/1st winter
1st winter
Juvenile
Juvenile
Juvenile
1st summer
1st winter to summer 
1st winter to summer
1st winter to summer
1st winter
1st winter
1st winter
1st winter
1st winter
1st winter
Juvenile/1st winter
1st winter 
1st winter 
1st winter 
Juvenile 
Juvenile 
juv. with smithsonianus characteristics
Faded 1st winter 
1st winter flying 
1st winter 
1st winter 
Juvenile/1st winter ,


 
 

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