3 14 Mr. C. H. B. Grant on Birds collected in Argentina, 



arc less rich and lighter in colour; these I take to be 

 younger birds^ though they have the speculum on the wing 

 as in the adult specimens. 



This Goose had not been seen in the Ajo district for 

 many years until the winter of 1909. A good many made 

 their appearance in the middle of May, and several hundreds 

 had arrived before I left in the middle of June. 



I was afterwards informed by Miss Runnacles " that in 

 company with CJdoephaya poliocephala they came in their 

 thousands and literally covered the camp, being most 

 unwelcome visitors, as Uie drought had caused a scarcity 

 of grass and these flocks of Geese helped to eat Avhat was 

 left ; they began to thin out towards the end of July, and by 

 the middle of August hardly one remained.^' 



This Goose is locally known as the ^^ Pato de la sierra^' 

 (Hill duck). Strange or rare birds in that district arc always 

 said to be visitors from the sierras. 



213. CyGNUS NIGRICOLLIS. 



Cygnus nigricollis Arg. Oru. ii. p. 124, 



C/ygaus melancoryphus Salvad. Cat. B. xxvii. p. 39. 



a. ? ad. Los Ynglases, Ajo. Nov. 10, 1908. 



Irides deep brown; bill dark slate-coloured, cere and 

 lores deep red ; legs and toes livid flesh-coloured. 



This Swan is common in the Ajo district, and is found 

 in small parties throughout the winter months. Owing to 

 the dry seasons experienced, I did not find any nests, and 

 although I examined every lagoon for them no young birds 

 were observed. 



213. COSCOROBA CANDIDA. 



Coscorohu Candida Arg. Orn. ii, p. 126. 



Coscorolia coscoroba Salvad. Cat. B. xxvii. p. 42. 



a, b. ? ad. Laguna do Milan, Ajo. Nov. 15, 1908. 



<: 9 ad. Los Ynglases, Ajo. April 13, 1909. 



Iridcs white; bill, legs and toes pink-flesh-coloured. 



Both the November birds have dropped all the primaries 

 and new ones are (levcloi)ing. T'he April bird has almost 

 completed the moult. 



