Aug. 1922. Game Birds — Osgood & Conover. 47 



Natural History shows the Colombian and Venezuelan birds to be 

 identical. Hence the species is not confined to the Pacific coast and 

 comparison with fresh Peruvian material would be desirable. 



These ducks were fairly common on the large cienega at Lagunillas. 

 At the time of our stay during the first part of May, only single birds 

 were seen, no flocks being encountered. These single birds, however, 

 did not associate with the masked ducks or tree ducks which were very 

 numerous, but kept by themselves in the more open stretches of the 

 marsh. No females were taken or seen which probably means that 

 at this season the birds were nesting. 



Nomonyx dominicus Linnaeus. 



Rio Cogollo, 2, 



The masked duck was first seen on a small cienega at the edge of 

 the savanna near Rio Cogollo. Here on March 1st, two males in the 

 immature plumage were taken. These birds were very tame, allowing 

 one to approach within about fifteen yards. 



Later at Lagunillas in the early part of May, these ducks were very 

 plentiful, occurring in flocks of ten to twenty. They spent their time 

 in the open patches of water among the lily pads, but would not allow 

 a boat to approach closer than about fifty yards before flying off a 

 short way and again alighting, A few males were seen in full plumage 

 but about nineteen out of twenty birds were in the hen plumage. Next 

 to Dendrocygna discolor this was the most common duck on the large 

 cienega at Lagunillas. 



Local names, Patooito, Buza. 



Merganetta columbiana Des Murs. 



Laguna de Pan de Azucar, i ; Rio Alba, i. 



Indefinite reports of the Torrent Duck were received from natives, 

 but the bird itself was not observed although many suitable localities 

 for it were visited. Its occurrence in the region is attested by two 

 specimens now in the Conover collection, obtained through W. F. H. 

 Rosenberg and collected by natives for Briceno Gabaldon and Sons. 



