“What a wonderful choice I’ve made.  With so many more birds than mammals I will be on the winning side for sure.”

But the mammals were not that easy to defeat.  Although there were fewer of them, they had sharp teeth and claws and were much larger than the birds.  

To make matters worse, Bat awoke to a very windy day.  The wind made it difficult for the birds to control their attacks.  Before long it was clear that the mammals had won that day's battle.