Data for "Why do afternoon copulations mainly occur after the egg-laying peak...

Data on egg laying dates, copulations, and pre-laying diets of Great Skuas (Stercorarius skua or Catharacta skua) and our observation times spent in the field in the breeding...本数据集涵盖大贼鸥（Great Skuas，学名Stercorarius skua 或 Catharacta skua）的产卵日期、交配行为及产卵前饮食的相关数据，以及我们在其繁殖期开展野外观测的时长信息