Note my corrections above. I have changed your thread title so that it includes some/all of the words you are querying.
Are you suggesting that you want to say "Til I hear the birdsong"? If so, the answer is "No, you can't". "As long as" does not mean the same as "until".
I have no idea what you meant by "I gonna fight". For a start, "gonna" is not a word. You might have meant "I'm going to fight" but, even so, I have no idea what that has to do with hearing birdsong.
Student or Learner