* Defining "uncommon" is subjective: Does it mean the language with the fewest speakers? The language with the smallest geographic range? The language with the least documentation?
* Data is often incomplete: Accurate speaker counts for many languages, especially those spoken in remote areas, are hard to obtain.
* Languages are constantly evolving: Languages can disappear or become revitalized, making any list quickly outdated.
However, we can look at some languages that are often considered rare or endangered:
Languages with very few speakers:
* Burushaski: Spoken by around 30,000 people in northern Pakistan. It's a language isolate, meaning it's not related to any other known language.
* Ainu: Spoken by a dwindling number of people in northern Japan. It's also a language isolate.
* Rotokas: Spoken by around 500 people in Papua New Guinea. It's known for having one of the smallest consonant inventories in the world.
* Tauya: Spoken by a few hundred people in Papua New Guinea. It's notable for its complex grammatical system.
Languages with limited geographic range:
* Many indigenous languages of the Americas: Many languages in the Americas have only a few hundred or even fewer speakers, often confined to a single community.
* Languages of the Andaman Islands: The languages of the Andaman Islands are highly endangered, with only a handful of speakers remaining.
Languages with little documentation:
* Many languages of remote regions: Languages spoken in isolated areas may have limited documentation, making it difficult to estimate the number of speakers or assess their vitality.
It's important to remember:
* Language diversity is valuable: Even the rarest languages hold unique cultural and linguistic heritage that deserves to be preserved.
* Language loss is a serious issue: Many languages are facing extinction, and efforts to revitalize and document these languages are crucial.
For a more comprehensive look at endangered languages, you can visit resources like:
* UNESCO's Atlas of the World's Languages in Danger: [https://www.unesco.org/en/articles/atlas-of-the-worlds-languages-in-danger](https://www.unesco.org/en/articles/atlas-of-the-worlds-languages-in-danger)
* Ethnologue: [https://www.ethnologue.com/](https://www.ethnologue.com/)
Remember that this is just a snapshot, and the linguistic landscape is always changing.