126 



THE NATIONAL GEOGRAPHIC MAGAZINE 



i 1 1 tgical Survey 



THE SNOWY OWL AT HOME 



In grace and speed of flight this bird is more hke a Hawk than an Owl. So swiftly does it 

 navigate the air that it can capture a Duck on the wing or a hare afoot. 



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rhotograph liy Taul W. Hoffman 



BLACK TF.RXS NEST IN THIS MID-WESTERN, FRESH-WATER MARSH 



This is one of tlie comparatively few long-winged swimmers in the United States that 

 commonly nest far away from tlie sea. It prefers the reedy fresh-water sloughs and marshes 

 of the Middle Western States. Note the adult Tern perching on the operator's head. It did 

 this repeatedly during one visit to this breeding place, apparently considering the operator a 

 part of the scenery. 



