Dreaming of a hairless bird that can't crow means that you may be squeezed by rich people, but in order to survive, you have no choice but to swallow it. Or you are often asked to do something you don't want to do at work, but you don't resist and can only do it reluctantly.
Dreaming of killing a bird, you are quite capable of controlling the situation today. People who have been hesitant to say things they don't like can choose to say them today. The ability to argue can make others unable to stop you. This change often means that you have lost some rights, so think carefully before making a decision!