Here are three shorter ways to say that for a 6-year-old:
- These butterflies zoom in the sun, their shiny wings sparkling.
- They fly in the daytime with wings that glitter like tiny mirrors.
- In the sun, these butterflies dart about with sparkling wings.
How I made them shorter: I kept the main idea (they fly in the sun and have shiny wings), used short words like "zoom" and "sparkle," and removed extra phrases.