Observations on Nest Parasitic Behavior in Birds

Du Fu's poem "Two Yellow Orioles Singing Green Willows, a Line of Egrets in the Blue Sky" is familiar to everyone, but the public knows little about the yellow orioles in the poem. Taking the description of the living habits of black-naped oriole and Asian koel as the starting point, this paper discusses the nest parasitism behavior of cuckoos and the current situation of the declining population of cuckoos in modern society, and then call for the protection of nature and animals.