摘要
The artificial nestbox on an Asian White Birch (Betula platyphylla) (1360 m in elevation) was used by a pair of Yellow-rumped Flycatcher (Ficedula zanthopygia) in Beijing, and five eggs were found in the nest in 2005. One was much larger and was identified as the Oriental Cuckoo’s (Cuculus optatus) egg.
2005年在北京小龙门地区发现一对白眉姬鹟(Ficedula zanthopygia)在悬挂于一棵白桦(Betula platyphylla)树上的人工巢箱中繁殖,巢箱内共有5枚卵,其中1枚卵显著大于其他4枚,经过鉴定确认为中杜鹃(Cuculus optatus)的卵。这是首次记录到中杜鹃在人工巢箱中对白眉姬鹟的寄生现象。
