. A natural history of the ducks . nd Bartlett (Sclater and Salvin, 1866) found it in eastern Peru on the lower Ucayali is probably not rare in eastern Bolivia though the only record I can find for this country is theBolivia old one of dOrbigny (1842). It does not appear to extend much south of the Buenos Argentina Aires region in Argentina, though it breeds in the Chaco (Hartert and Yenturi, 1909),and has been taken in Jujuy Province (Lonnberg, 1903). It has also been met with in Tucuman(Burmeister, 1860), in Cordoba (Schultz,,/?rfe Dabbene, 1910), rarely in the La Plata region (Scla

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. A natural history of the ducks . nd Bartlett (Sclater and Salvin, 1866) found it in eastern Peru on the lower Ucayali is probably not rare in eastern Bolivia though the only record I can find for this country is theBolivia old one of dOrbigny (1842). It does not appear to extend much south of the Buenos Argentina Aires region in Argentina, though it breeds in the Chaco (Hartert and Yenturi, 1909),and has been taken in Jujuy Province (Lonnberg, 1903). It has also been met with in Tucuman(Burmeister, 1860), in Cordoba (Schultz,,/?rfe Dabbene, 1910), rarely in the La Plata region (Sclaterand Hudson, 1889), and even in Buenos Aires (Durnford, 1878). East and north of the La Plata it is more abundant. It unquestionably inhabits Uruguay (Tre- moleros, 1920) and is found in southeastern Brazil in Rio Grande do Sul (H. and R. von Ihering, Urueuav 1907), in Parana (H. and R. von Ihering, 1907) and on the Rio Parana (von Pelzeln, 1868-71. Azara (1805) found large flocks in Paraguay, and since his time it has <-I O CD DQ LU

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