SCREAMERS. 361 
J 
second and third toes are free, the third and fourth are connected at the base by a 
web, The long and powerful wings have the third quill the longest; the rounded 
tail has twelve feathers; and the contour feathers are soft and on the neck narrow. 
Both sexes are alike in plumage. The screamers are divided into two genera, of 
which the first is represented by the horned screamer (Palamedea cornuta) of 
Guiana and Amazonia, characterised by the presence of a slender horn-like 
process, 5 or 6 inches arising from the middle of the head, and curving upwards 



















































HORNED SCREAMER (+ nat. size). 
and forwards. Of the two spurs on the wing, the foremost is by far the longer 
and more powerful. In colour, the soft feathers on the top of the head are whitish 
grey, with blackish tips; those of the cheeks, throat, upper neck, wings, and tail 
are dark brown; the inner secondaries and greater wing-coverts having a greenish 
metallic sheen, and the smaller wing-coverts yellowish roots; while the feathers 
of the lower neck and upper breast are silver-grey, broadly banded with black, and 
those of the abdomen pure white. The iris is orange, the beak blackish brown 
