VERTEBRATA. 
339 
hind in a ridge. The toes, always three in front and 
one behind, are on the same level. The eggs are usu- 
Fi». 327_Kingfisher ( Ceryle). 
ally colored. Here belong the Ravens, Crows, Jays, Birds- 
of - Paradise, Blackbirds, Orioles, Larks, Sparrows, Tan- 
Fig. 328.—Swallow ( Hirundo ). 
