Why does cole feel such anger toward the mother sparrow and her young?

Cole feels anger toward the mother sparrow and her young because he perceives them as symbols of the innocence and vulnerability he has lost in his own life. Their carefree existence starkly contrasts with his struggles and emotional turmoil, triggering feelings of jealousy and resentment. Additionally, the sparrow's instinct to protect its young mirrors Cole's own feelings of isolation and abandonment, causing him to project his inner turmoil onto them. This anger ultimately reflects his unresolved issues and the pain he carries from his past.