CREATE TABLE table_23494 ("Ostrich" TEXT, "Hamerkop" TEXT, "Hadeda Ibis" TEXT, "African Spoonbill" TEXT, "Whitefaced Duck" TEXT, "Knobbilled Duck" TEXT)

What is the African Spoonbill when the Hadeda Ibis is Flernecked Nightjar?
SELECT "African Spoonbill" FROM table_23494 WHERE "Hadeda Ibis" = 'Flernecked Nightjar'
SELECT "African Spoonbill" FROM "table_23494" WHERE "Hadeda Ibis" = 'Flernecked Nightjar'