Seagulls can be seen all year round in Dalian, but their numbers will change in different seasons. April to August is the peak period for Dalian seagulls to breed and feed. At this time, the number of seagulls is more. They chose to come to Dalian in this season because there are abundant food resources and suitable environmental conditions here. From September, the number of seagulls will gradually decrease. This is because of the arrival of autumn, seagulls began to migrate back to their wintering grounds or look for food resources elsewhere.