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