Between 2004 and 2005 Discovery Channel aired a series of short video clips, co-produced with the UN, which focus on endangered communities living in different regions of the world. The languages of these communities face extinction simply because their numbers are very low and constantly on the decline. The highest population count a community featured on this series had was 5,000, the lowest, 300.

References:

- Scottish Gaelic in UNESCO Atlas of the World's Languages in Danger
http://www.unesco.org/culture/languages-atlas/en/atlasmap/language-id-411.html