An indigenous sign language, quite distinct from Spanish Sign Language. Most speakers are in the northern dialect. Most are over 30 years old. 1,100,000 in the ethnic group. Related to the eastern dialect of Tur-Leonese.
Dialects are inherently intelligible to each others' speakers.
They use Extremaduran in all contexts. Those who have gone to school speak Spanish in formal situations and to outsiders. Dialects are inherently intelligible with each others' speakers. Not easily intelligible with the surrounding language varieties. Intelligible with Galician, but the speakers do not identify with the Galicians, and do not want their orthography to be like Galician.