The Duke's Son (The Wings Of Floroth) by V.E Shearman

To the people of the kingdom of Floroth, where magic is a normal part of life and fantastic creatures inhabit the surrounding lands, harpies are seen as an evil race. But when a Duke near the border of Floroth discovers a baby harpy, abandoned for the crime of merely being male, his kindhearted daughter convinces him to spare the baby and adopt him. The boy’s true nature is hidden from everyone at first, including the harpy himself, but the web of secrets surrounding young Reyes must eventually unravel to reveal the truth. When it does and Reyes discovers his true identity, will he revert to his unscrupulous harpy nature, or stay true to his human upbringing? The answer will determine the fate of Floroth as elves prepare to invade the kingdom