2. The word "vividness" is personified to describe the flower magpie and eagle. "vividness" is an adjective, which is used as a causative verb here, meaning "to make … vivid". This word vividly shows the vitality and beauty that the magpie and eagle bring to the sky.
3. Compare the white swan with the crow to show the humble position of the crow, and at the same time show the hypocrisy and cruelty of human beings, and point out the deep reasons for the disappearance of the crow.
4. Reason: (1) Living in groups does not need forests. (2) Crows are ugly and cannot be a commodity in the bird market.
5. Take care of the "adventure" in the third paragraph, and at the same time put forward expectations for crows: I hope crows will become "tenacious survivors", return to the place where people live together, and let life reproduce the classical beauty of "crows' wings melt at dusk". (That's right)