Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to prevent small worms in birdbaths [title] Keep the setup natural. [step] Attract birds and maintain cleanliness by setting up the birdbath in as natural a way as possible. Add features like sand, branches, or stones.

Ending1: This will help keep your parrot near the water since birds develop their social instincts from the water. [title] Add plants and insect coverings to keep your bird safe. Ending2: Don't leave the game on the floor because the birds may fall in and drown in the mess. Add a birdbath heater or a fan and make sure the temperature is right. Ending3: Ensure the water is warm to the touch. Also, fill the birdbath with plenty of water. Ending4: This will allow birds to stand, drink, and bathe easily. [substeps] Put a little sand or a few stones at the bottom of the bath so the birds can walk.

Answer format: ending1/ending2/ending3/ending4