Once upon time, a war broke out between the land animals and birds. Both sides were struggling to prevail over the other. Bats, which carried the characteristics of both sides, were impartial. When birds ask the bats to join them they would reply: “We are mammals” and when mammals made the same offer; they claimed that they were birds.
Sometime later, the two parties signed a treaty. The bats quickly sided with the birds and congratulated them. However, birds did not accept them into their society. When they tried to join the mammals, they received a similar reception. So the bats were accused of betrayal by both sides. They had no alternatives but to isolate themselves to become prisoners of the dark.