Mr. J. F. Hamilton on Brazilian Birds. 307 



31. Trogon atricollis, Vieill. 



Distributed pretty generally throughout the forests, but not 

 abundant in any one locality. It seems to be of rather solitary 

 habits, as I never saw two together. 



32. Thalurania glaucopis (Gm.). 



By far the commonest Humming-bird in the district. They 

 seem rather fond of water, being most numerous in the vicinity 

 of a stream. I watched one for some time bathing; it was 

 perched on a small twig overhanging a brook, and every now 

 and then darted down to the surface of the water, hovering 

 over it and, whilst still on the win<r, splashing about ; and after 

 a few seconds it would return to its perch and preen its feathers. 

 After bathing several times, it darted suddenly away. 



33. POLEMISTKIA CHALYBEA (Vieill.). 



Only two specimens obtained. 



34. CLYTOLiEMA RUBINEA (Gm.). 



The note of this species is more prolonged than that of either 

 of the two preceding birds, and is considerably shriller. 



35. Crotophaga ani, L. 



Very common. There is scarcely an open piece of ground 

 where there are a few bushes that has not its flock of these birds. 

 They are especially fond of marshy ground, and may often be 

 seen running about amongst a herd of cattle picking up the 

 insects disturbed by the animals. They seem to be very regard- 

 less of danger, and will scarcely do more than flit from one bush 

 to another, even when the numbers of the flock are greatly 

 thinned ; when hidden in long grass they will allow themselves 

 to be almost trodden upon before rising. The Brazilians seldom 

 molest them, as their flesh is not good to eat. ' 



36. Piaya cayana, L. 



I saw these birds pretty often, but always singly. They are 

 by no means of active habits, but remain for some time on the 

 same perch, often hiding themselves very closely; their long 

 tails, however, which they are constantly spreading, generally 

 betray their presence. I found a berry in the throat of one 

 which I shot. 



