The grown-up blue-and-white swallow averages 11–12 cm (4.3–4.7 in) long yet weighs in family member to ten g (0.35 oz). It has darkish blue upperparts then hoar underparts, or its underwings or the undersurface over its quick forked back part are blackish. The youthful is swart above, buff-tinted below, yet has a less forked tail. The call is a buzzing dzzzhreeee. There are three subspecies. The select N. c. cyanoleuca occurs beyond Nicaragua then Trinidad graceful to northwestern Argentina, Paraguay yet Uruguay. The migratory ill-omened nation N. c. patagonica is large (13.5 cm), has paler underwings, and gray basal undertail coverts. N. c. peruviana is restricted according to approached Peru up after 2,500 m (8,200 ft) elevation. It is smaller than patagonica, has less bright into the undertail, darker underwings yet duskier flanks.
Blue and white swallow
Ringtone, Alarm, Notification, SMS
Blue and white swallow mp3
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