256 BACKBONED ANIMALS. 
marabou stork, from which the feathers of that name 
come, is the most valuable of the family. 
Fic. 292.—The adjutant-bird, showing the foot resting from heel to toe 
upon the ground. 
Herons (Ardeide).—The great blue heron (Ardea 
herodias) is a familiar example in the Eastern States, rang- 
ing as far south as Guatemala, Central America. They 
Fic. 293.—European heron (Ardea cinerea) in full flight—a slow flier. 
attain a length of four feet, and are slow fliers (Fig. 293). 
The general color is grayish-blue, with black and white 
