Grammar check for: “Shrikes spike their prey on thorns or broken twigs.” — explanation for a 6-year-old

Yes — your sentence is grammatically correct. Here are two simple ways to say it:

• Original (correct): "Shrikes spike their prey on thorns or broken twigs. That makes it easier for them to eat and store their food."
• Clearer for young readers: "Shrikes stick their prey on thorns or broken twigs. That makes it easier for them to eat and save their food."

Short explanation for a 6-year-old:

1. "Shrikes" is the name of the birds (more than one), so the verb "spike" is the right form for plural.
2. "Their prey" means the food the birds catch.
3. "On thorns or broken twigs" tells where they put the food.
4. "That makes it easier..." explains why they do it: it helps them eat later or keep the food safe.

Note: "spike" is correct but a less common word for this idea. "Stick" is a simpler word, and "impale" is a more precise (but stronger) word.