Kabushima in Aomori is one of the greatest place to watch the colony of Black-tailed gull. It takes about 15 minutes walk to the island from JR East Same station on Hachinohe line. About 3.5hours by Tohoku-Shinkansen from Tokyo to Same.
（Japanese narration only）
The nesting site has been protected by the fishermen as the gulls guide the best point of taking fish.
Why don't you visit the Kabushima?