of the Lower Pilcomayo. 147 



of Cairina moschata, were observed during tlie few weeks 

 immediately following some heavy rains, which had given 

 rise to a number of temporary freshwater lagoons. During 

 a regular rainy season the number of Ducks and other 

 aquatic birds would no doubt undergo an enormous increase. 



148. COLUMBA PICAZURO. {Op. cU. '\\. p. 139.) 



(No. 385, c?; 135, ? .) Fortin Page. July 14th, 1890. 

 Toba, "Wokoto.'' 



Common. The Picazuro Pigeon is, on the Pilcomayo, very 

 shy of man, and is most frequently seen winging its way rapidly 

 overhead, mostly flying in the same direction. As a rule, 

 they are solitary, and they frequently stop to rest on the top- 

 most twigs of trees or on the dead palm-stems by the margin 

 of the esteros. "While sitting there they utter a soft cooing 

 song, which, commencing quite imperceptibly, swells up 

 rapidly to its full volume — "he-oc, coo-coo-caoo ; coo-coo-caoo ; 

 coo-coo-caoo." At other times they utter a series of abrupt 

 " coo-hoos." 



149. CoLUMBULA picui. {Op. cit. ii. p. 143.) 

 Obtained at numerous points on the Pilcomayo. Along 



with Chamaepelia talpacoti it forms flocks, which feed on the 

 ground amongst the brush by the river. The feet were 

 crimson in the specimens collected. 



150. Cham^pelia talpacoti. {Op. cit. ii. p. 144.) 



This and the preceding Dove are exceedingly abundant, 

 feeding together in flocks amongst the brushwood bordering 

 the river. 



151. Engyptila chalcauchenia. {Op. cit. ii. p. 144.) 

 Very common. Feeds in open spots by the margin of 



the forest, generally two or three together. 



152. Crax sclateri. {Op. cit. ii. p. 145.) 



Only found in the larger forests near the Paraguay. 



153. Penelope obscura. {Op. cit. ii. p. 146.) 

 Forests of Rio Bermejo and Pilcomayo near its mouth. 



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