238 LLOYD’S NATURAL HISTORY. 
VI. THE GREY-HEADED GUAN. ORTALIS CANICOLLIS. 
Penclope canicollis, Wagler, Isis, 1830, p. 1112. 
Ortalida canicollis, Wagler, Isis, 1832, p. 1227. 
Ortalida guttata, White, P. Z. S. 1882, p. 627. 
Ortalts canicollis, Salvin ; Ogilvie-Grant, Cat. B. Brit. Mus. 
XXIL p!) SOS (1893). 
Adult.—Very similar to O. ruficauda, but the chest and upper 
breast darker and of a more olive-grey colour; the chestnut 
tips to the tail-feathers much wider, and confined to the /wo 
outer pairs of tail-feathers. ‘Total length, 20 inches; wing, 
8°8 ; tail, 9°9 ; tarsus, 2°35; middle toe and claw, 2°35. 
Only female examples have been examined, but the male is 
no doubt similar in plumage. 
Range.—Central South America; Paraguay, Rio Parana, Rio 
Vermejo, Lower Pilcomayo, Salta and Tucuman in the Argen- 
tine Republic, Villa Maria on the Upper Paraguay, Brazil. 
Mr. J. Graham Kerr says :—‘“‘ The ‘ Charata’ is exceedingly 
abundant in all the thick forests of the Pilcomayo. They 
occasionally descend to the ground to feed, but this is com- 
paratively rare ; usually they remain amongst the upper branches 
of the trees, feeding on various fruits. This is a sociable bird, 
many being usually found near one another. It is also rather 
timid ; but this quality is in great part masked by its intense 
curiosity. When one enters a forest in which the ‘Charatas’ 
are not accustomed to the sight of man, they examine the in- 
truder curiously, and call their companions with their soft and 
cheepy call-note. If one remains perfectly still all the birds 
within hearing collect around, and by answering their call-notes 
one can bring them down to within a few feet. 
“Tf one walks up towards a tree in which are some ‘ Chara- 
tas’ they first utter their soft call-note to draw their companions’ 
attention, and then, as one comes nearer, they begin to hop 
about uneasily, and their voices rise in pitch by regular grada- 
