40 CLASS AVES. 



genus Circatus of Vieillot, which approaches the 

 eagles. 



Jean le Blanc, Lath. (F. Gallicus, Gmel. PI. Enl. 



t. 4] 3. A. brachydactylus, Meyer.) 

 Bill black ; toes bluish ; white, spotted with brown ; 

 back and wing coverts brown. Length two feet. 



Gray French Eagle, (C. cinereus, Vieillot, Gal. Ois. 

 t. 12.) 



Dull ash ; quills black ; tail above brown ; beneath 

 white banded. 



America produces fisher eagles, with long wings, 

 like the preceding, in which a greater or less part of 

 the sides of the head, and sometimes of the throat, is 

 denuded. These are called Caracara, (see Azara, 

 vol. ii. 30.) 



And Gymnops, by Spix. Have been fonned into the 

 genera Ibycter, Daptrius, and Polyborus, by Vieillot, 

 and Milvago by Spix. 



The common Caracara, or Brazilian Kite, Lath. {F. Bra- 

 siliensis, Gm.) Gal. Ois. t. 17. Spix. t. La. Jun. 



As large as the balbuzzard, striped crosswise black 

 and white, long and slender feathers,white at the throat, 

 and a black crest a little elongated, in a tuft ; the cover- 

 ing of the wings, thighs and end of the tail blackish. 

 It is the most common predatory bird in Paraguay 

 and Brazil. It is the Caracara of Margrave, but ill 

 described ; and tlie F. cheriway, Jacq. beyt. may be 

 a variety of it ; 



The Polyborus Vulgaris of Vieillot, and the Vultur 

 C/j^/iway of Jacquin, (Vog. t. 4,) and perhaps the 



