VERTEBRATA. 319 
5. Grallatores, or Waders. — These are readily distin- 
guished by their 
long and bare legs. 
Generally, also, the 
toes, neck, and bill 
are of proportion- 
ate length, and the 
tail short. They 
feed on small an- 
imals, and, with 
a few exceptions, 
frequent the banks 
of rivers. In fly- 
ing, their legs are 
stretched out be- 
hind, while in most 
other Birds they 
are folded under 
the body. Such are the Rails, Cranes, Herons, Storks, 
Ihises, Stilts, Snipes, Sandpipers, and Plovers. 
6. Cursores, or Run- 
ners. — This small, ab- 
errant order includes 
the Ostriches, Casso- 
waries, and Apteryx, 
well marked by their 
gigantic size, rudi- 
UN i \ 
Vs 
Fig. 302.—Heron (Ardea). 
mentary wings, keelless 
breast-bone, and robust 
legs. The African Os- 
trich has two toes, the 
7 Cassowary three, and 
Fie. 303.—Rail, or Marsh Hen (Rallus elegans). the Apteryx four. The 
ki icin barbs of the feathers 
are disconnected. They subsist chiefly on plants, seeds, 
