Collalba Pía Oenanthe pleschanka

Jaunty little terrestrial songbird of plains, agricultural fields, and semi-desert, where often perches prominently on utility wires and boulders. Tuxedoed breeding male is black with snow-white crown, belly, and rump. Female is sandy brown above and white below. Nonbreeding adult and immature have sandy underparts and pale fringes to the wing feathers, producing a worn, scaly look. Note black-and-white tail pattern in all plumages. Circles and plunges in an impressive display flight, in which a rambling series of whistles, trills, and buzzes are given. Calls include twangy “bi-zee!”, dry “chak” notes, and short, falling “dew.”