Silverwing by Kenneth Oppel

When Shade, a young Silverwing bat angers the owls that live in the same forest as him, he accidentally causes war between the bats and owls that result into the destruction of his colony’s roost. As the surviving Silverwings flee for hibernation, a violent storm separates Shade from his family and he ends up on a deserted island. There, he meets different bats and a Brightwing bat named Marina. Shade and Marina’s search for his family is less difficult, thanks to a mental sonic map Shade’s mother had left him. On their way to his new roost, the journey becomes difficult as the two young bats encounter malevolent vampire bats that want Shade to lead them to his colony so they can devour his kind, Silverwings.
Shade must summon the strength and courage to save his own kind from total destruction and he must prove to those who doubt him that he is capable of doing more than what they think he can’t.

But will he be able to save his fellow Silverwings? Will he be able to prove himself? Read to find out.

This is a good book if you enjoy adventure and suspense!