It's the same snow hole. It is one of the common names of a small bird that lives in swamps and wetlands. It is also known as pitite or laundy. Its scientific name is Motacilla alba and belongs to the Motacidae family. The fishside feeds on insects and small crustaceans.
pezpita-refers to the expression : insectivorous bird, small, passearian, nests in the rocky and similar natural walls, gray, white belly, wings and black tail and has as particular it announce to man the arrival of cold weather-