14 BIRDS OF BmiTSn GUIANA. 



the nndev tail-coverts dark cbestnufc with a siihapical hlack spot 

 and tipped with white. 



This individual was obtained at Makauria River in Anonst 

 1910. 



An example from the Ituribisi River, which is sliohtly more 

 advanced in age, has tlie back almost uniform rufous brown and 

 many of the breast-feathers without a black cross-bar. 



A young bird in the collection shows the ap])roacli of the blackish 

 feathers on the top of the head and the disappearing of the 

 down ; the sides of the head and hind-neck still retain the down ; 

 back and wing-coverts rich olive-brown coarsely marked with 

 black and spots and bars of golden butF ; a large amount of 

 black is seen on the feathers of the breast and sides of the body 

 which are more or less olive-brown, becoming paler and almost 

 ]nire white on the middle of the abdomen ; under tail-coverts 

 pale buff marked with rufous and black. — Ituribisi River, October 

 l'J08. 



A second young specimen from the same locality, which also 

 retains down on the head, has the back almost uniform che:>tnut, 

 and the black marks, so conspicuous in the other bird, scarcely 

 observable in this one ; the breast and sides of body pale rufous 

 with scarcely a trace of black on any of the feathers ; under 

 tiiil-coverts rufous marked with black and ti])ppd with white. 



The series of adult birds shows great variation of colour on the 

 under surface, some birds are abnost entirely rufous, while others 

 display a great deal of white. There appears to be great variation 

 of colour on the under tail-coverts — for instance, while some are 

 black tipj)ed with buff others are entirely buff with longitudinal 

 black or chestnut markings. 



We do not understand Count Salvadori's remark concerning 

 the female of this species, whicli he says differs from the male by 

 having two rufous bands on the feathers. We have cojiipared a 

 series of twenty examples, both male and female, and find that all 

 have two l)ands on each feather. 



Bi'eedhtg-season. "This bird seems to have no particular breeding- 

 season " (C A. LJoijd). 



Nest. " It nests on the ground in a hollow scratched out by 

 itself (SchomhurpJc). "Makes no attempt at a nest at all but 

 deposits its single egg on the ground at random'^ (C. A. Lloyd). 

 Kggs. "Lays but two eggs of a chocolate colour ^^ (//. TJui/d 



