BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 93 



Lavalle, Buenos Aires, October 23 to November 15; General Roca, 

 Rio Negro, November 23 to December 3; Zapala, Neuquen, Decem- 

 ber 7 to 9; Carhue, Buenos Aires, December 15 to 18; Victorica, 

 Pampa, December 26 to 30; Carrasco, Uruguay, January 9 and 16, 

 1921; La Paloma, Uruguay, January 23; San Vicente, Uruguay, 

 January 26 to February 2; Lazcano, Uruguay, February 3 to 9; 

 Guamini, Buenos Aires, March 3 to 8; (Potrerillos, Mendoza, March 

 20 a rectrix found) ; Tunuyan, Mendoza, March 24 to 28; Concon, 

 Chile, April 26 to 28. Adult males taken at Lavalle, November 8, 

 General Roca, November 26, Carhue, December 15, and an immature 

 female shot at Tunuyan, March 24, are all representative of the 

 typical form. Milvago c. femucoensis Sclater'^ described from 

 Palal near Temuco, Province of Cautin, Chile, and said to range in 

 the Provinces of Cautin and Valdivia, is represented in the United 

 States National Museum by specimens collected by naturalists from 

 the United States Fish Commission steamer Albatross, at Laredo 

 Bay, Straits of Magellan, a considerable extension of range over 

 that j)reviously known for this form. These birds agree with one 

 from Valdivia in darker coloration and more heavy persistent bar- 

 ring below than is found in typical chimango. Apparently temu- 

 c-oensis ranges throughout the region of heavy rains in southern 

 Chile. Specimens from near Santiago, Chile, Tunuyan, and Gen- 

 eral Roca show a tendency toward dark coloration, but are so near 

 chwiango as to be indistinguishable. A skull and a skeleton of adult 

 males were preserved at Victorica, Pampa, on December 28 and 31, 

 und the skull of an immature bird with the cranial bones not yet 

 ankylosed was found near Guamini, Buenos Aires. 



The chimango is a common species of the open country, and is 

 seen almost inevitably by the naturalist on every day afield during 

 work within its range. The birds are at their best as scavengers 

 along muddy shores where they feed or forage in little groups, often 

 in company with gulls, or are found beating back and forth over 

 areas where food may be found. In the open country they rest on 

 the ground or on fence posts, or perch in low bushes or trees where 

 such are available. The birds have little fear, as they are despised 

 for their manner of living, and, save where they become too numer- 

 ous, are seldom molested. It was common to have them come about 

 fearlessly while I examined dead birds in the field, and care was 

 necessary to guard specimens from damage. The flight of the 

 chimango is comparatively weak, though the birds often delight in 

 soaring and sailing during windy weather, particularly at the begin- 

 ning of the breeding season. When in the air they show a white 



■^ Bull. Brit. Orn. Club, vol. 38, March 4, 1918, p. 43. 

 54207—26 7 



