There is "Lingbi Goose Water, Sang Yu Swallow Beam" in the poem. A couplet, annotated as "Lingjiao Lake is a place for geese to play in the water, and branches and leaves of mulberry trees and elms are beams for swallows to nest." The beauty of artistic conception and writing gives people pleasing enjoyment.
However, people with textual research are always so disappointed. Do swallows nest on branches?
As I was born and raised in the countryside, I have lived and worked in the countryside for more than forty years. I have never seen swallows nesting in eaves and cliff caves, nor have I seen swallows nesting in trees. Am I ignorant? Or is Daiyu used to boudoir since she was a child, pampered and pampered, and there is no clerical error in her life experience?
Sogou said: Generally, bird's nests in trees are made of branches and feathers. As long as it is not extreme weather, ordinary wind, rain and sun have little influence. But swallows make nests out of mud and mix branches and blades of grass. As the main material, soil is most afraid of water, so swallows will look for shelter from the wind and rain, such as beams, eaves, holes and other places to nest, rather than nesting in trees. In addition, swallows are more afraid of being attacked by snakes, mice and other animals, so it is much safer to build a nest on the roof than in a tree. (Quoted from Fanghua, Ye Zhi)