278 BIRDS OF BRITISH GUIANA. 



Total length 265 mm., culmen (including the cere) 17, wing 207, 

 tail 104, tarsus 35, middle toe and claw 42. 



Adult male. Similar in plumage to the adult female, but smaller. 

 " Feet yellow ; bill deep bluish black, yellow at base." 



Total length 242 mm., culmen (including the cere) 15, wing 182, 

 tail 91, tarsus 35, middle toe and claw 34. 



The male and female described were collected on the Kamakabra 

 River in 1911. 



Breeding-season. Unknown in British Guiana. 



J!sest. Composed of twigs and built in trees (Schomburgh). 



Egys. Undescrihed from British Guiana. 



Range in Britisli Guiana. Upper Takutu Mountains, Ituribisi 

 River, Supenaam River, Bartica, Kamakabra River, Bonasika 

 River, Curubung River, Essequebo River {McConnell collection) ; 

 Bartica, Kamakusa, Mount Rorairaa, 3500 ft. (W/iifelg). 



E.ctraUmitul Range. South America generally to Argentina and 

 Central America. 



llahits. Schom])urgk states (Reis. Guian. iii. p. 733) that he 

 found this beautiful Falcon mostly in pairs, and perching on the 

 withered branches of trees growing on the river-banks. The male 

 and femnle are alike, only the female is rather larger than the male. 

 Its food consists of snakes, lizards, and small birds. It usually 

 calls when flying away from its resting-place. The nest is com- 

 posed of twigs and built on trees. The 'Macusis' call it Teu-teu." 



Mr. J. J. Quelch makes the following remarks on this species 

 (Timehri (2) vi. p. 129) : — "The commonest of the Falcons, 

 however, is the little Red-throated Hobby or Baridie Hawk [Hij2>o- 

 triorclds riifgularis), which is so frequently met with perched on 

 the tall dead limbs of the trees alono; the banks of our ci'eeks and 

 rivers and in the open clearings in the forest. The food of this 

 species is of a very mixed kind, consisting of small nuimmals, 

 birds, reptiles, and insects, and it will often be observed darting 

 from its lofty perch at its prey and returning to the same point to 

 devour what it has caught — just as will so often be noted in the 

 case of the Falcon-Kite and the Great-billed Buzzard." 



170. Falco deiroleucus. 

 Orange-breasted Falcon. 



Falco deiroleucus Temm. PL Col. i. pi. 368, 1825 (Brazil) ; Braboume 



& Chubb, B. S. Amer. i. p. 73, no. 671, 1912. 

 Falco aurantius Sharpe, Cat. B. Brit. Mus. i. p. 402, 1874 (Demcrara) ; 



Qiiclch, Timehri (2) vi. p. 130, 1S92. 



