I have carefully observed two kinds of birds and found that they are very aware of beauty. 　　Turtle doves love to rest on the roof and make melodious calls. They stop there either in groups or alone, patiently singing and reading an old song (perhaps an ancestral family motto) over and over again, and sometimes they spend the whole afternoon doing this. On some roofs, they squat for a while, After scribbling a few times, it turned around and flew away, and rarely came here again. why is that? Through comparison, I know the reason: the roofs they don’t want to stay for a long time are mostly those rough…