If the three dots are migratory birds, it is somewhat inconceivable that they can appear so bright. Note that if they are really migratory birds, their altitude should be from 3000 feet at the lowest to 30000 feet at the highest since the camera focus was set at infinity at that time and migratory birds seldom fly higher than 20000 feet. There is only one possibility that the three dots are really migratory birds. It is that they flied over an area with very strong light underneath during photo taken, that is strong light pollution. But is this possible at that time? Besides, the flight paths of the three dots are too well coordinated, how can the three migratory birds can suddenly move to the right side of the picture at the same time at night? How can a migratory bird know the position of the other two at night so well and react instantly?
