Why are there many birds on the tree in front of the New Jinjiang Hotel in Dongshan Middle Road, Huainan City on winter nights?

In view of the problem of ability, we can't do an experiment ourselves to verify the conjecture. Based on experience and common sense, it is probably the soft light, the fragrance emitted by the new Jinjiang Hotel in winter, the heat emitted by the heating, and the safe geographical location. Therefore, birds who like colorful, enjoyable and comfortable life and are very smart should be comprehensively selected. It does not depend on a single factor pursued by birds, such as the location of safe havens and so on.