Heads and Necks 272 
partly bare, ornamentation often takes the form of many- 
shaped and often highly coloured wattles, such as we see 
highly developed in a King Vulture. 
The most common example of this is seen in a domestic 
rooster or a turkey, but in many other birds these wat- 
tles of skin are very brilliant in hue. Indeed the casso- 
waries are resplendent in their gorgeous hues of blue, yel- 
low, red, and many other intermediate shades. Turkeys 
too, at the breeding season, develop bright colours. 
The Yucatan Wild Turkey, which has thus far resisted 
all attempts at domestication, has the bright blue naked 
skin of the head, dotted with tubercles of the most bril- 
liant orange, while a long tube-like wattle, also tipped 
with orange, dangles down over the beak. The wattles, 
or caruncles, of the Bell Bird are interesting as being con- 
nected with the windpipe in such a way that they become 
inflated with air when the bird utters its wonderful note. 
In the White Ibis the face only is bare, in the spoon- 
bill the head and face, and the whole head and neck in 
the Marabou Stork; the effect of this condition in the 
latter bird being heightened by the enormous pouch 
which hangs suspended from the neck. The same is true 
of the Adjutant. 
A close inspection of the neck of one of these storks 
will show that, while ordinary feathers are absent, there 
is a scanty covering, here and there, of what looks like soft, 
curling ringlets of chestnut hair. The resemblance is 
absolutely perfect, and no naturalist in the world, if shown 
one of these locks, would say that it came from a bird 
and not from one of the hair-covered mammals! 
