How does the mood change from the beginning to the end of the darkling thrush by thomas hardy ? ( picture is attached )

In the beggining the theme gives a sense of depression, but toward the end shows a sense of hope for something. Hope this helps!!

Explanation:

In the beginning the subject gives a feeling of discouragement, however close to the end demonstrates a feeling of trust in something.

cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.