206 Mr. A. H. Holland on the Birds of the 



81. Phoenicopterus ignipalliatus (GcofFr. et d^Orb.). 

 Fairly common in flocks from May to August, though 



many immature specimens remain all the year. The native 

 name is " Flamingo." 



82. Chauna chavaria (Linn.). "^ 



Very common all through the year, living in flocks during 

 the autumn and winter. Is able to soar to an immense 

 height. Breeds early in September. Many eggs of Meto- 

 piana peposaca are laid in these birds^ nests, though they are 

 never hatched. The young bird is covered with yellow down. 

 (C/. Ibis, 1890, p. 427.) The native name is " Chaja." 



83. Cygnus nigricollis, Gm. 



Fairly common all the year, living in small flocks during 

 the winter. Breeds early in August amongst the rushes in 

 deep lagoons. 



84. COSCOROBA CANDIDA (Vicill.). 



Common all through the year; living in small flocks 

 during the winter, but not mixing with Cygnus nigricollis. 

 Breeds early in October amongst the rushes in shallow la- 

 goons. The nest is shallow ; it is composed of dry rushes 

 built up from the bottom of the pond. The native name is 

 '' Ganso.'' 



85. Heteronetta melanocephala (Vieill.). 



Eare ; individuals are to be found during winter in 

 company with flocks of Teal. They appear to prefer small 

 lagoons, with rushes growing in them, to open lakes or 

 arroyos. They fly low, and do not make long flights until 

 thoroughly disturbed. They are also sometimes seen in 

 small flocks during July after heavy rains, but so far I have 

 not observed any during the spring or summer. (C/". notes, 

 Ibis, 1891, p. 19.) 



-fSQ. Querquedula cyanoptera (Vieill.). 



Fairly common from February to October in pairs, although 

 numerous pairs collect together into loose flocks. I have 

 not observed any of this species from October through the 

 summer. Their occurrence depends on the quantity of water 



