BUSARELLUS. 243 



154. Busarellus nigricollis. 

 Black-collared Hawk. 



Falco ni(/ricolUs Lath. Ind. Orn. i. p. 3-j, 1790 (Cayenne). 



Ichthyohorus husareUus Cab. in Schomb. lieis. Guian. iii. p. 739, ISIS. 



SusareUus nigricollis Sharpe, Cat. B. Brit. Mus. i. p. 211, 1S74 

 ( Demerara) ; Salvin, Ibis, ISSG, p. 74; Quelch, Timehri (2) v. 

 p. 104, 1S91 (Georgetown) ; id. op. cit. vi. pp. 120, 154, 1S92 

 (habits) ; Beebe, Our Search for a Wilderness, p. 354, 1910 (Abarv 

 Eiver) ; Brabourne & Chubb, B. S. Amcr. i. p. 68, no. 629, 1912. "' 



"Black-necked'' or "White-Leaded Buzzard" or ^^ Crab-Hawk," 

 '' Fish-Hawk" (Quelch) ; "Cream-headed Hawk" (Beehe). 



Adult male. General colour of the plumage both above and below 

 rufous, many of the feathers on the upper surface lined or barred 

 with black ; bastard-wing, primary-coverts, and quills black, outer 

 secondary-quills barred with rufous on the inner webs towards the 

 base, increasing in extent towards the innermost, which are rufous 

 ])arred with black ; the tail, which is barred with black, has a broad 

 suljterminal band of the same colour; top of head, sides of face, 

 and chin buffy-white with black shaft-lines on the croAvn aiid 

 nape, where the feathers are pale rufous ; a patch of black feathers 

 on the throat. 



Total length 45.5 mm., culmen (including the cere) 37, wing 380, 

 tail 177, tarsus 80, middle toe and claw 79. 



The male described was collected on the Abary River in July 

 llH)t]. 



.\<htlt female. Similar to the adult male. 



Jh'eedi)i(i-season. Unknown in British Guiana. 



Nest. Made of twigs and built on a moderately tall tree 

 {Schombxiriik). 



K<j(js. Undescril^ed from British Guiana. 



Hanfje in Jirltish (juuuia. Abary Uiver (McCoimell collection) ; 

 Bupuuuni Kiver {Schombun/k) ; Georgetown (Quelcli). 



J'J.rtralimit(d Ranrje. Brazil, Peru, Paraguay, 



Habits. According to Schomburgk (Beis. Guian. iii j). 731)) this 

 })ird was very common on the borders of the Savanna rivers. Its 

 favourite place was a moderately tall tree where it looked out for 

 its prey, wiiich consisted of insects, ampularia, and fisli. It al>o 

 occnrretl at the edges of the Itogs. S('h()ml)urgk found its nest, 

 which was fomposed of twigs and built in a modcratcl v tall tree, 

 near the l{ii|>ununi Kiver. The nest containccj two young which 



were just hatcliod. 



I! -1 



