Two swallows are quarrelling. How could you tell me?

1. Swallow quarrels with his wife, and sometimes one finishes, and the other goes on. When the quarrel is fierce, their tails will also shake up and down quickly. Finally, one of the swallows pecked the other's mouth with his mouth, ending the quarrel.

2. A big bird and a small bird are fighting. You peck me, I peck you. I said to the bird, "You should give in to each other and don't quarrel." The two birds seemed to understand what I said and flapped their wings and flew away. The above is the copy that two swallows are arguing about.