It's a way of calling butterflies and moths. It is also a way of calling a wall or wall made of stone and of low height. Diminutive and derogatory of bird. In some parts of Spain it is also called mosquera, escalabradura, portillo or pajareta to a small window or window through which hay or straw is entered to the stable or carts.
In areas of lower Andalusia, a bow tie is used as a synonym for a wall or stone wall of low height.
In ready, perfectly area, there are washer, very beautiful butterflies, but the night have sad colors and are not well received.