^"^illO^"] CoLK, The Tagging of Wild Birds. 153 



well down on the sides anteriorly and defining the upper abdominal region; 

 the rest of the lower surface, including the lower tail-coverts, pure white. 

 Feet and tarsi deep yellow ; the soles shaded with dull brown. Iris hazel 

 brown. Bill yellow with a shading of blue close to the cere. Cere and 

 naked skin of forehead orange with a strong carmine shading. 



Geographical Range. So far as known the eastern part of Territory of 

 Chubut or Chupat, Patagonia. 



This carrion hawk, apparently heretofore undescribed, was re- 

 ceived in an exchange of bird skins from the Museo La Plata in 

 Buenos Aires. The bird is undoubtedly fully adult, and was taken 

 near the settlement of Chubut in February, 1896. The original 

 number is 8 and the bird was labelled Ibycter americanus. It is 

 excluded from the group of this genus to which americanus belongs 

 by the difference of the coloring of the under parts and tail. In 

 certain respects it approaches Ibycter carunculatus but is much 

 larger than that bird and from a widely remote district. The only 

 other bird near it in coloration is I. megalopterus, with the throat, 

 breast and chest black. This species, too, so far as known, is 

 confined to the Pacific side of the Chilian Andes and perhaps 

 encroaches upon extreme southern Patagonia to the eastward. 



THE TAGGING OF WILD BIRDS: REPORT OF 

 PROGRESS IN 1909. 



BY LEON J. COLE. 



At the meeting of the American Ornithologist's Union in 

 Cambridge in November, 1908, the Avriter presented a proposition 

 for the study of the migrations and other movements of wild birds 

 by means of numbered bands, which should be placed around the 

 birds' legs.^ The great advantage claimed for this method was the 

 accurate data that might be accumulated relative to the movements 

 of individual birds. This work had already been attempted on a 



' Cole, Leon J. The Tagging of Wild Birds as a means of studying their Move- 

 ments. Auk, Vol. XXVI, No. 2, pp. 137-143, April, 1909. 



