Harpy

Hideous hags with the wings and lower bodies of giant eagles. Use their song to lure victims to their doom.

AC7 [12], HD3* (13hp),
Att 2 × claw (1d4), 1 × weapon (1d6 or by weapon), 1 × song (charm), THACO 17 [+2],
MV 60’ (20’) / 150’ (50’) flying, SV D12 W13 P14 B15 S16 (3),
ML 7, AL Chaotic, XP 50, NA 1d6 (2d4), TT C

• Charm: Anyone who hears the song of a group of harpies must save versus spells or be charmed: move towards the harpies (resisting those who try to prevent it); defend the harpies; obey the harpies’ commands (if understood); unable to cast spells or use magic items; unable to harm the harpies. A character who saves is unaffected for the rest of the encounter. Killing the harpies breaks the charm.
• Magic resistance: +2 bonus to all saves.

Source: Classic Fantasy