Do Animals and Birds are meant to be free?

Who among us would not want to enjoy freedom and the independence to move about? And why should we deprive animals and birds of this right? I still remember that my dear grandpa use to keep some pet birds in the past and kept them in the large cage. There you can see about hundreds beautiful birds fly here and there. However, he realized that the creatures he loved had wings and were meant to fly and soar into the vast expanse of space. Just as he would be happy exploring the world and not be confined to a box, his pets were not meant to be imprisoned in a cage. He knows that if he loved them and wanted them to be happy, he had no other choice but had to release them. His heart was lighter after he set them free and that point he knew that he had done the right thing. He has not kept any birds ever since.