Griffin's Feather (Dragon Rider #2)

The last winged horses are on the brink of extinction. The foals are ill, and Bena young dragon ridervolunteers to seek the only cure: a Griffin’s feather. His silver dragon, Firedrake, agrees to help. But Griffins are a dragon’s fiercest enemy, and live far away in the sweltering jungle. A dangerous and exciting adventure begins.