All Winged Beast-Type monsters gain 200 ATK and DEF. When any "Harpie Lady" or "Harpie Lady Sisters" are Normal or Special Summoned: The player who conducted the Summon targets 1 Spell/Trap Card on the field; destroy that target.
Harpie Queen can be discarded to search out this card. Alternatively, if you already have Harpies' Hunting Ground on the field you can summon Harpie Queen to trigger Harpie’s Hunting Ground’s destruction effect.
These are the monsters you can summon to trigger Harpies' Hunting Ground’s effect. Most of them are not really Harpie Lady but have effects that treat them as Harpie Lady.