BIEDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 368 

 ANTHUS CORRENDERA CHILENSIS (Lesson) 



Corydalla chilensis Lesson, Rev. Zool., vol. 2, 1839, p. 101. (Chile.) 



Near Concon, Chile, on April 24 and 25, 1921, several of these 

 pipits were seen. A male taken on the first date mentioned shows the 

 pronounced yellow w^ash above and below that distinguishes this form 

 from typical correndera. An immature male, shot near Guamini, in 

 southwestern Buenos Aires, on March 7, 1921, is identical in colora- 

 tion with the Chilian form, and must be designated as that race 

 under our present understanding of the forms involved. Specimens 

 of chilensis in the United States National Museum include birds 

 from near Santiago, and a small series from Gregory Bay and 

 Elizabeth Island, in the Straits of Magellan. Skins from Lago San 

 Martin, Santa Cruz (Museum of Vertebrate Zoology collection), 

 while not typical, are nearer chilensis than correndera. It is as- 

 sumed that the specimen from Guamini is a migrant from the south 

 or southwest. Patagonian skins seem more or less intermediate and 

 specimens from Rio Negro are not wdiolly typical of correndera. 

 The Guamini skin may possibly represent an extreme variant toward 

 chilensis from some region in Patagonia wdiere the two forms inter- 

 grade. 



ANTHUS LUTESCENS LUTESCENS Pucheran 



Anthus Ititescetis Puchkban, Arch. Mus. Hist. Nat. Paris, vol. 7, 1855, 

 p. 343. (Rio de .Janeiro, Brazil.) 



Eleven skins of this small pipit come from the following localities : 

 Las Palmas, Chaco, July 15 and 22, 1920, one male, two females; 

 Riacho Pilaga, Formosa, August 9, female; Puerto Pinasco, Para- 

 guay, September 3, two females ; Kilometer 80, west of Puerto Pinasco, 

 September 8, 9, and 21, three males, two females. Though single 

 birds were seen occasionally, it was usual to encounter this species in 

 flocks that contained as many as 50 individuals. The birds fre- 

 quented wet meadows or the borders of lagoons where low, scattered 

 clumps of bunch grass furnished a certain amount of shelter, or less 

 often were found on open spaces at the borders of ponds, or even on 

 mats of vegetation floating on shallow water. When first alarmed 

 they crouched motionless in little depressions or under slight cover, 

 where they entirely escaped the eye, or if too closely pressed took to 

 wing with a curious, hesitant flight, in which the body was held at a 

 vertical angle of 45° and the bird progressed in a series of jerking 

 undulations. Though at times flocks rose to wheel about in the air, 

 they usually dropped back to the ground in a short space to remain 

 quiet until danger seemed past. When feeding in cover they walked 

 slowly about in a crouching position, creeping under wisps of grass 

 and seeking any slight protection that offered. At such times they 



