Description wikipedia

The southern antpipit (Corythopis delalandi) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found Argentina, Bolivia, Brazil, and Paraguay. The southern antpipit is 13 to 14 cm (5.1 to 5.5 in) long and weighs 14 to 18 g (0.49 to 0.63 oz). The sexes have the same plumage. Adults have a grayish olive crown, a faint whitish loral spot, and a faint whitish spot behind the eye on an otherwise pale grayish olive face. Their upperparts, wings, and tail are olive. Their chin and throat are creamy white. Their underparts are mostly white with an almost solid black "necklace" on the breast from which black streaks extend along the flanks. The flanks also have a grayish olive wash. Juveniles resemble adults. Both sexes have a medium to dark brown iris, a blackish maxilla, a pale pinkish mandible with a yellow to pinkish orange base, and long pale grayish pink legs. The southern antpipit is a bird of the southern Atlantic Forest. It is found in eastern Bolivia's Santa Cruz and Tarija departments, in northern Argentina's Salta, Misiones, and Corrientes provinces, in eastern Paraguay, and in southern Brazil from those countries northeast to southern Maranhão, east to Minas Gerais, and south to northwestern Rio Grande do Sul. The species inhabits tropical lowland forest both primary and secondary. In elevation it occurs from sea level to 1,000 m (3,300 ft) but mostly is found below 800 m (2,600 ft).