CHERRIE : ORNITHOLOGY OF THE ORINOCO REGION. 34I 



Ibvcter ater (Vieillot). 

 Doptrms ater Vieill., Analyse, 1816. pp. 22, 68. 

 Ibycter ater Berlepsch & Hartert, p. iii. 



Not observed by the writer, but Beebe collected a specimen at 

 ■ Guanoco in the Orinoco delta. 



Berlepsch and Hartert record specimens from Temblador and from 

 Nicare (Caura River). 



Ibycter americanus (Boddaert). 

 Falco americanus Bodd., Tabl. PI. Enl. 1783. p. 25. 

 Ibycter americanus Berlepsch & Hartert, p. 112. 



Not uncommon about the rapids of Atures, and at Maipures. 



Colors from fresh birds are : eye carmine ; bill straw yellow ; cere, 

 bare loral region and sides of lower jaw back as far as the rictus, 

 plumbeous ; bare skin around eye, cheeks and throat vermilion ; feet 

 vermilion. 



MiLVAGO CHIMACHIMA (Vieillot). 



Polybonis chimachima Vieill., Nouv. Diet. V. 1816. p. 259. 



Milvago chimachima Berlepsch, Ibis. 1884. p. 437 (Angostura) ; 



Berlepsch & Hartert, p. 112. 



Native name "Chiriquari" (Chee-ree-qua-ree) or Garapatera. Not 

 uncommon. An examination of the stomachs of several indicated that 

 this species feeds largely on beetles and other insects, but is not averse 

 to a diet of small fish ( !) and large ticks such as infest cattle are greedily 

 eaten. This hawk is not infrequently seen perched on the backs of 

 cattle. 



There is considerable variation in the colors of the fleshy parts 

 about the head, due to age, sex and season. In nuptial plumage the 

 colors seem to be : eye dark mummy brown ; bare skin about eye chrome 

 yellow, blending into a sulphur yellow at base of maxilla and mandible; 

 bill very pale blue ; feet pea green, 



AcciPiTER bicolor bicolor (Vieillot). 

 Sparz'ius bicolor Vieill., Nouv. Diet. X. 181 7. p. 325. 

 Cooperastnr bicolor Berlepsch & Hartert, p. 112. 

 Accipiter bicolor bicolor Hellmayr, Novit. Zool. XIII. 1906. p. 382 



(Caicara, Orinoco River). 



Not common. Noted at Altagracia, Caicara and Quirbana de 

 Caicara in the thinly \i^ooded savanna regions back from the river. 

 Hawks of this species were usually seen hunting in pairs. 



