LÖNNBERG AND RENDAHL, ORNITHOLOGY OF ECUADOR. 37 



This species is thus smaller than B. hypospodius (ef. below), 

 and it is of great interest to note the oecurrenee in the same 

 country of at least three different Buzzards forming an almost 

 continuous series in size from B. poecilochrous to B. erythro- 

 notus and at the same time with a certain resemblance in colour 

 as well. 



When compared with typical specimens of B. erythronotus 

 from Argentina the adult males of this race in the present 

 coUection certainly prove to be much darker and may be 

 termed blackish slate. 



The first plumage of the not fully fledged young bird is 

 dark brown above, streaked with rufous on the sides of the 

 head; somewhat margined and notched with rufous buff on 

 the upper back; scapulars tipped and on the concealed parts 

 of the inner web barred with rufous buff; upper wing-coverts 

 more barred, tipped and notched with the same colour. Pri- 

 maries blackish with more or less buff on the inner web, the 

 inner ones also slightly tipped with buffish. Secondaries 

 partly grey on the inner w^eb and barred with dark brown. 

 Upper as well as lower tail-coverts buffish white, unspotted, 

 but a few ha ve a quite narrow and short black shaft-streak. 

 Tail-feathers rather broadly tipped with buffish white, other- 

 wise uniformly black above, greyish with numerous dark 

 cross-bars below. Lower side buff with broad black stripes, 

 proximally beginning with a narrow black shaftstreak. Thighs 

 påle buffish with dark rufous brown cross-bars. This first 

 plumage thus differs from the description of a young bird of 

 this species in Cat. Birds Brit. Mus. I. 



Buteo hypospodius Gurney. — To this species belongs a 

 beautiful and quite typical male in full plumage, collected 

 ^72 1916, Pichincha above Lloa, 11500 f.: Length of Aving 421 

 mm. First, second. tliird and fourth primaries rather deeply 

 notched; third, fourth and fifth primaries of equal length. 

 General colour (bluish) slate, just as Swann states in his last 

 edition of »A Synopsis of the Accipitres». 



To the same species we also count three younger birds, 

 which are similar with regard to the subequal length^ of third, 

 fourth and fifth primaries (the fourth being only slightly 



^ Gurney does not mention anything about the length of the fifth 

 primary in the description of this species, he only says that the third and. 

 fourth are subequal. 



