A two-word phrase for a device that imitates the sound made by a waterfowl. Keep in mind: The first word may be at the bottom.
Reveal top + bottom answer and reasoning
Answer: DUCK CALL
Top half: DUCK - DUCK is the first half of "duck call", the top + bottom answer for the shared final clue: "A two-word phrase for a device that imitates the sound made by a waterfowl. Keep in mind: The first word may be at the bottom".
Bottom half: CALL - CALL completes "duck call", so the top and bottom rows answer the shared final clue together.