Grammar Check for a 6-Year-Old: 'Adult tamarins have long white moustaches' (and the sentence about moustaches)

Let's fix the sentence together

The goal is to make the sentence easy to read and correct.

1. Spelling: "moustache" in American English is spelled mustache, but many places use moustache. For a typical learning context, use mustache.
2. Plural when talking about multiple animals: Use mustaches for more than one mustache.
3. Subject-verb agreement and article: Keep the sentence simple and clear.

Corrected sentence: "Adult tamarins have long, white mustaches."

Notes: - A comma after "long" helps readability.
- White is an adjective; adding a comma can help separate descriptive words.