Grammar help for a 7-year-old: Fixing “An echidna's nose finds bugs by their tiniest wiggles in the dirt.”

Good sentence! It just sounds a little awkward. Here are two clear, correct ways to say it for a 7-year-old:

• Short and simple: An echidna uses its nose to find bugs by feeling tiny wiggles in the dirt.
• Very clear: An echidna uses its nose to find bugs by feeling the tiny wiggles the bugs make in the dirt.

Why these are better (step by step):

1. Who: "An echidna" — the animal doing the action.
2. What it does: "uses its nose to find bugs" — this makes it clear the echidna is doing the finding, using its nose.
3. How: "by feeling tiny wiggles in the dirt" — this says how the echidna finds the bugs. Saying "the tiny wiggles the bugs make" makes it extra clear that the wiggles come from the bugs.

Notes:

• "Their" in the original sentence is okay because it refers to the bugs (plural), but for a child it can be clearer to say "the bugs make" or "they make."
• "Tiniest" is okay, but "tiny" is simpler and sounds more natural here.

Pick the version you like best — both corrected sentences are grammatically correct and easy for a 7-year-old to understand.