Short & Catchy:
* Sparrows: Tiny Birds, Big Impact.
* Save Our Sparrows, Save Our Future.
* Tweet for a Cause: Save the Sparrows.
* Every Sparrow Counts.
* A World Without Sparrows is a World Without Song.
Informative:
* Sparrows Need Our Help: Protect Their Habitat.
* Reduce Pesticide Use, Save Sparrows.
* Plant Native Trees, Support Sparrow Nesting.
* Choose Organic, Choose Sparrow-Friendly.
* Let Sparrows Fly Free: Stop Illegal Trapping.
Emotional Appeal:
* Sparrows: A Symbol of Hope, Let's Keep Them Flying.
* Give Sparrows a Chance: They Deserve Our Care.
* Let the Chirping Continue: Save the Sparrows.
* A World Without Sparrows is Silent, Let's Change That.
* Sparrows: Our Friends, Our Neighbors, Let's Protect Them.
Action-Oriented:
* Join the Movement, Save the Sparrows.
* Spread the Word, Make a Difference.
* Every Action Counts, Let's Save the Sparrows.
* Act Now, Save the Sparrows, Save Our World.
* Make Your Backyard Sparrow-Friendly.
Humorous:
* Don't Be a Bird Brain, Save the Sparrows!
* Sparrows Need Us, We Need Their Chirps.
* Help the Sparrows, Tweet About It!
Remember to choose a slogan that resonates with your target audience and effectively conveys the message of sparrow conservation.