Considered by some authors to be a subspecies of Vilcabamba Thistletail (Asthenes vilcabambae). References See References. Files: More Information Articles about the Ayacucho Thistletail If you would like to read any articles about the Ayacucho Thistletail... Show Articles (0) No Pictures of Ayacucho Thistletail If Birdpedia has no pictures of Ayacucho Thistletail or you would like to see more, then try the following... From BING (0) No Videos of Ayacucho Thistletail If Birdpedia has no videos of Ayacucho Thistletail or you would like to see more, then try the following.. From BING (0)