This creature has the body of a hawk and the head of a beautiful woman with long, shining hair.
A siren may use bardic performance as a 4th-level bard (9 rounds/day), and can use countersong, distraction, fascinate, inspire competence, and inspire courage. Levels in the bard class stack with this ability.
When a siren sings, all non-sirens within a 300-foot spread must succeed on a DC 19 Will save or become enthralled (see below). The effect depends on the type of song the siren chooses, and continues for as long as the siren sings and for 1 round thereafter. A creature that successfully saves cannot be affected again by any of that siren's songs for 1 hour. These are sonic, mind-affecting effects. The save DC is Charisma-based. Enthralled creatures behave in one of the following four ways, which the siren chooses when she begins singing.
Captivation: A siren's song has the power to infect the minds of those that hear it, calling them to the siren's side. When a siren sings, all creatures aside from other harpies within a 300-foot spread must succeed on a DC 16 Will saving throw or become captivated. A creature that successfully saves is not subject to the same harpy's song for 24 hours. A victim under the effects of the captivating song moves toward the siren using the most direct means available. If the path leads them into a dangerous area such as through fire or off a cliff, that creature receives a second saving throw to end the effect before moving into peril. Captivated creatures can take no actions other than to defend themselves. A victim within 5 feet of the harpy simply stands and offers no resistance to the harpy's attacks. This effect continues for as long as the siren sings and for 1 round thereafter. This is a sonic mind-affecting charm effect. The save DC is Charisma-based.
Fascination: Affected creatures are fascinated.
Obsession: An obsessed victim becomes defensive of the siren and does all he can to prevent harm from coming to her, going so far as attacking his allies in her defense. The victim is not controlled by the siren, but views her as a cherished ally. This is a charm effect.
Slumber: The victim immediately falls asleep, rendering the creature helpless. While the siren is singing, no noise will wake the sleeping creature, though slapping or wounding him does. The creature continues sleeping for 1d4 minutes after the siren stops singing, but can be awakened by loud noises or any other normal method.
These bizarre beings have the bodies of hawks, owls, or eagles, but the heads of beautiful human women. Their faces typically reflect the human ethnicity dominant in the area in which they lair, and they almost always bear a vibrant and youthful countenance.
All sirens are female and long-lived. The oldest known sirens haunt their territories for nearly a millennium, although most only live for a few hundred years. Sirens require male humanoids to mate, and several times per decade either capture or rescue bold or comely sailors who enter their territories. Stories abound of sirens dying—either through heartache or suicide—when sailors they attempted to lure overcame their compelling powers and escaped their grasps. Sirens always live near the sea, where their powerful voices can carry over the waves and attract the attention of unwary sailors who trespass near their isles.
A typical siren has a wing span of 8 feet, and weighs 120 pounds.
Pathfinder Roleplaying Game Bestiary 2, © 2010, Paizo Publishing, LLC; Authors Wolfgang Baur, Jason Bulmahn, Adam Daigle, Graeme Davis, Crystal Frasier, Joshua J. Frost, Tim Hitchcock, Brandon Hodge, James Jacobs, Steve Kenson, Hal MacLean, Martin Mason, Rob McCreary, Erik Mona, Jason Nelson, Patrick Renie, Sean K Reynolds, F. Wesley Schneider, Owen K.C. Stephens, James L. Sutter, Russ Taylor, and Greg A. Vaughan, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.