There are about 60 species of this wading bird; Asia has a purple one & America, a great blue
[DOC] [TLE] heron | bird | Britannica.com [PAR] Any of about 60 species of long-legged wading birds, classified in the family ... 
the 130-cm (50-inch) great blue heron (A. herodias) of North America, with a 
wingspan of 1.8 ...