CREATE TABLE table_23493 ("Ostrich" TEXT, "Hamerkop" TEXT, "Hadeda Ibis" TEXT, "African Spoonbill" TEXT, "Whitefaced Duck" TEXT, "Knobbilled Duck" TEXT)

What is the Hadeda Ibis when the Ostrich is Dark Chanting Goshawk?
SELECT "Hadeda Ibis" FROM table_23493 WHERE "Ostrich" = 'Dark Chanting Goshawk'
SELECT "Hadeda Ibis" FROM "table_23493" WHERE "Ostrich" = 'Dark Chanting Goshawk'