Slaty-backed Gull (schistisagus) / オオセグロカモメ / 큰재갈매기

(last update: December 2015)
Coordinators:
Kim Seog-min (South Korea)
Hideo Shimura (Japan)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

slaty rings
slaty PDFs

slaty 1cy August
slaty 1cy September
slaty 1cy October
slaty 1cy November
slaty 1cy December

slaty 2cy January
slaty 2cy February
slaty 2cy March
slaty 2cy April
slaty 2cy May
slaty 2cy June
slaty 2cy July
slaty 2cy August
slaty 2cy September
slaty 2cy October
slaty 2cy November
slaty 2cy December

slaty 3cy January
slaty 3cy February
slaty 3cy March
slaty 3cy April
slaty 3cy May
slaty 3cy June
slaty 3cy July
slaty 3cy August
slaty 3cy September
slaty 3cy October
slaty 3cy November
slaty 3cy December

slaty sub-ad January
slaty sub-ad February
slaty sub-ad March
slaty sub-ad April
slaty sub-ad May
slaty sub-ad June
slaty sub-ad July
slaty sub-ad August
slaty sub-ad September
slaty sub-ad October
slaty sub-ad November
slaty sub-ad December

slaty ad January
slaty ad February
slaty ad March
slaty ad April
slaty ad May
slaty ad June
slaty ad July
slaty ad August
slaty ad September
slaty ad October
slaty ad November
slaty ad December

Slaty-backed Gull (schistisagus) hybrid? 4th cycle (4CY), October 17 2009, Tsuri-shihama, Japan. Picture: Shigenobu Aizawa.

Please visit Aizawa's Blog for many more pictures!

Outer primaries deep blackish as in Slaty-backed, but bill shape, head shape and diffuse winter mottling more like Glaucous-winged Gull.