Anthra's Moon

Ysabel hadn't planned on becoming a hero, but when a gigantic bird called the Anthra abducts a baby princess in Ysabel's care, it's up to 14-year-old Ysabel to save the child before the rising of the full moon, Anthra's Moon, when the great bird will feed the helpless baby to her newly hatched chicks. Along with her two companions, an old soldier and a friendly giant, Ysabel travels across a dangerous land battling an evil enchantress, poisonous snakes, ferocious sawfish, and fire-breathing birds.
And then she faces the Anthra.