Last Saturday, I organized birding Cruise in Tomakomai.
This day, I saw large flocks of Streaked Shearwater over ten thousands from coast to off shore.
Some Sooty and Flesh-footed contained in this flock.
I expected there were many Kittiwakes and Pomarine Skuas, but they were not so many comparing to the number last year. It is said that migration of sea birds delay. Actually, There were few Streaked Shearwater last year.
I noticed that Skua has long claw which uses to attack to Gulls.