Gull Research Organisation

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) 2nd cycle / 3CY April* In spring, birds develop a white head, with streaking concentrated around the eye and in the lower neck.	Your pictures here?

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

**Slaty-backed Gull (schistisagus) 2nd cycle / 3CY April**