It is another common name of the Motacilla alba. A passearian bird that is also known as a laundress, white launtor or snow hole. Snowtie or pitite. It belongs to the family Motacillidae.
nevereta-refers to the expression : insectivorous bird, small, passearian, nests in the rocky and similar natural walls, grey, white belly, wings and black tail and has as particularity announce to man the arrival of cold weather-