Nervus Cawwing Raven Bird

Here a good example bird behavior. What i have a number of a Video clips on 2 different days a year apart . The first clips were made on 06/09/2009 and 05/10/2010 .in the same location it may have been the same Raven. The Raven was displaying a number of displacement habits ,such as bill wiping ,pull on branches, picking bark , pecking and loud squawking calls