However, it's important to note that:
* There are multiple dialects of Kayapo. The exact number is debated, but estimates range from 10 to 20. While mutually intelligible to some degree, they can have significant differences in vocabulary, pronunciation, and grammar.
* Portuguese is also spoken by many Kayapo people. This is a result of contact with Brazilians, and its use is increasing, especially among younger generations. It's important to acknowledge the complexities of language contact and the challenges of language maintenance in the face of globalization.
* Other languages might be spoken by individual Kayapo. This could be due to migration, marriage, or other reasons. For example, some Kayapo might speak other indigenous languages or even foreign languages.
Overall, while Kayapo is the primary language, understanding the diversity and dynamic nature of language use within the Kayapo community is crucial.