Butler, Robert William. <br/><br/>
The great blue heron  a natural history and ecology of a seashore sentinel /  [electronic resource] : 
Robert W. Butler. 
 - Vancouver, BC :  UBC Press,  c1997. 
 - xvi, 167 p., [16] p. of plates :  ill. (some col.), maps. 
<br/><br/>Includes bibliographical references (p. [155]-162) and index. 
<br/><br/><br/>Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Great blue heron--British Columbia.<br/>Herons--British Columbia.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QL696.C52  / B86 1997 
<br/><br/><label>Dewey Class. No.: </label>598.3/4