492 



PKEYING BIRDS— RAl'XOKES. 



Polyborns Audubonii, Cassin, 

 THE CAEACABA EAGLE. 



" Polyhonis Brasilicnsis, Swainsox," Audibon, Birds, ort. cd. I. 21 ; pi. 4. — Xuttall, Man. 



I. f,l. 

 Poli/hon(s viilijaris, ViEiLLOT, Nouv. Diet. V. 1816, 357. — Audueon, Biids Amcr. pi. 161. 

 Pulyhonis tharun, Cassis, P. R. Rep. Birds, IX. 4.'>. — Heermann, X. vi. SO. 

 Poli/horiis Awhihonii, Cassin, Pr. A. N. Sc. 1865, 2. — Coces, Pr. A. N. Sc. 1866, 49. 



Sp. Char. Adult. Head and body above, and a wide belt on the abdomen and tibia;, 

 brownish-black ; neek, breast, upper and tmder tail coverts, yellowish-white ; the breast 

 with narrow transverse bands of black. Tail white at base, with numerous lilack bands, 

 and widely tipped with black ; primaries banded with white. 



Younger. Head and body above dull brown, darker on the head, and many feathers 

 having paler edgings; under parts dark brown, with dull yellowish white strijies; throat 



P. Audubonii. 



dull white ; tail for the greater part, and its coverts above and below, white, with numer- 

 ous ashy-brown bars, tijjped with brownish-black. 



Bill pale bluish, edged with yellow ; space before eye, cheeks, and cere, bright red ; feet 

 yellow ; iris dark brown. 



Length. 33.00 to 25 00 ; extent, 48.00 ; wing, 15.50 to 1 7.00 ; tail, 9.00 or 10.00. 



Hull. Central America, north to Florida, Texas, New Mexico, Colorado Valley, Cali- 

 fornia. 



According to Dr. Heermann, as quoted allO^-e, tlii.s liird \-isits Fort Yuma 

 in company with the vultures;, wliicli it resembles in habits, being scarcely 



