Birds of Uruguay . 211 



legs of the adult in life have a very yellow cast on the olive. 

 On the 1st May, about sundown, I saw fourteen passing over 

 Sta. Ana, low down, going south, and shortly after at least 

 a hundred Gulls of the same size higher up. Cold S.W. 

 winds about that time. 



130. Larus maculipennis. Spot-winged Gull. 



On the 2nd and 3rd October there were some adults of 

 this Gull in Montevideo Bay, though birds in winter and 

 immature dress were far more abundant. They remind one 

 of the Blaek-headed Gull. In autumn they appeared in the 

 camp. On the 20th April I saw two close to the estancia, and 

 from that time they might often be seen about the camp, 

 sometimes sitting on the carcass of a sheep or cow from 

 which the hide had been taken. On 20th May I shot an 

 adult with a lovely rosy flush on its breast. A few days 

 after there were a great many about the estancia. The cry 

 resembles that of our English species. 



131. Larus cirrhocephalus. Grey-capped Gull. 



On the 2nd and 3rd October there were some adults in spring 

 dress in Montevideo Bay, and possibly some in immature 

 and winter dress also. This is a beautiful Gull. Mantle 

 and wings darkish pearl-grey, latter black-tipped, the 

 underside of wings a fine dark grey, giving it a curious 

 appearance. The bird looks ring-necked in the distance, as 

 the grey cap is much darker on the nape and throat than 

 on the face; legs and feet deep red. 



132. tEchmophorus major. Great Grebe. 



I saw this Grebe on the following occasions : — 1st October ; 

 off coast of Bauda Oriental, near the Castillo Bocks. 9th 

 October, when in quarantine in Buenos Ayres Roads, River 

 Plate, one passed alongside ; the divided black crest partly 

 erected ; not adult, as the neck in front and breast were white. 

 13th October, about 6.30 a.m., before disembarking from 

 the river-boat ' San Martin/ T saw a pair among the shipping 

 in Montevideo Bay. 10th June, one at sea early in the 

 afternoon, still off the coast of the Banda, but only sighting 

 one low mountain-top. 



