Birds of Central Patagonia. 401 



*QUERQUEDULA FLAVIROSTRIS. 



Resident. Common throughout our journey, and nesting 

 at the mouth of the Sengelen. 



■^QUERQUEDULA VERSICOLOR. 



Resident. The same remark applies to this as to Q. fla- 

 virostris. 



■^Dafila spinicauda. 



Resident, and common in the valleys of both the Sengel 

 and Sengelen. 



■^Mareca sibilatrix. 



The commonest Duck met with during our journey, and 

 nesting abundantly at the mouth of the Sengelen. 



*Spatula plat ale a. 



Resident. Common up the Sengelen and Sengel. Near 

 the mouth of the former river, just after it leaves the lake, 

 there exists a chain of small lagoons surrounded by extensive 

 reed-beds, and forming a perfect paradise for Ducks, Geese, 

 and Coots, which there abound. 



■^Erismatura ferruginea. 



Resident. Pretty common in lagoons bordering the Sen- 

 gelen and Sengel, where I observed a curious habit of the 

 male bird. When he is enraged at the presence of an in- 

 truder in his haunts, he puffs out his breast to its fullest 

 extent ; and bringing down his beak on the hollow thus formed 

 with considerable force, a curious drumming noise is produced, 

 which I have heard at a distance of fifty yards. At the same 

 time he raises and expands his tail, and, swimming round and 

 round to display his terrors, appears a ridiculous picture of 

 defiance. 



*Columba maculosa. 



Resident. Commonly observed throughout our journey. 



FULICA armillata. 



Common in the lakes and on the Sengel and Sengelen. 

 The adult has the beak and shield primrose-yellow, the latter 

 large and oval ; the base of upper mandible and small portion 



