Harpy

Harpies are sexual predators. When considering this statement, note that emphasis is placed firmly on the word "predators", for the harpy fulfils the evolutionary imperatives of sustenance and reproduction through the same means. Do not mistake a harpy for a harmless seductress.
Harpies resemble women, generally either human or elven, with wings sprouting from their backs and legs that end in taloned feet. Typically these resemble the wings and talons of a vulture, although there are a wide variety of harpy subspecies resembling other avian species, ranging from hawks and eagles, who tend to be stronger physical specimens inclined to a more solitary lifestyle, to the vibrant plumage of parrots, who lack the enchanting song of their sisters, but instead wield powerful illusory magic. All of these subspecies, however, are united in their basic predatory nature. Harpies are not cleanly creatures, and as a rule one can gauge just how dangerous a given specimen is by the rankness of her odour. The more successful a huntress she is, the more layers of gore cake into her feathers and the fouler she smells. Indeed, among the more social varieties of harpy, an individual's stench is one of the most important factors determining her place in the pecking order.
A harpy's den is one of the foulest places in all the world, second only to the immediate vicinity outside a Harpy's den. While the remains of past victims will litter both inside and out, a Harpy at least has the decency not to relieve herself inside her own den.
Of course, the most well-known hallmark of the harpy is her enchanting song. No matter how vile and hideous a harpy's visage is, her song is capable of entrancing an individual and bending them to her will. This song can be used to lure prey away from companions and into an ambush, or to leave the victim so captivated that they walk off a cliff in their distraction. Needless to say, this song is one of the Harpy's most potent tools when hunting her favourite prey: men.
Harpies in heat are truly vicious creatures. They will band together and seek out the strongest male humanoid they feel they can reasonably overpower, and use their song to lure him away from any companions. When their prey is along, they will then attempt to incapacitate him. This is generally accomplished by working together to lift the man into the air, and then drop him from a height low enough that he will survive, but high enough that his legs break on impact. Once their quarry is incapable of escaping, the harpies will compete with each other to establish dominance. This involves elaborate posturing, wafting of their wings to compare stench, and occasionally in outright combat, though the loser rarely suffers any permanent injury. This determines the order in which the harpies will first mount, and then devour their victim.
One month after mating, a harpy will lay a clutch of two to four eggs, which hatch three months later. Members of the aerie take turns warming the eggs, allowing the mother to go out and hunt. After hatching, baby harpies reach adolescence at ten years of age, and full adulthood at seventeen, often helping to raise their younger sisters until they are old enough to have children of their own.