How does the bird symbolize santiago in the old man and the sea?

The little bird symbolizes the frail and powerless Santiago. The bird was blown out to sea, tired, frail, and he would be attacked when he returned to land.

Tags: little bird,  santiago,  old man 
Monday, February 06 2012
Source: http://www.olearyweb.com/classes/english10012/readings/012Content01.html