Harpy

There are two kinds of Harpies: Kestrels and Bats. Both produces Harpy Milk and Harpy Semen.

The Kestrel can be found in Sensual Sands and can be seduced by giving Foxen Semen.

The Bats can be found in a cave underneath Amorous Hallows near the Goblins, and can be seduced with Demon Milk.