Birds can’t be brought into the outer space because birds need gravity to swallow food. few days before NASA has put on an experiment with a bird. they brought bird into the space. after the ship passes the gravity level the bird is not eating anything and it has some balancing problems.
NASA officials thought that its just a gravity problem but suddenly the beaks of bird was pointed to ground everytime. he is not lifiting the beak. then the team identifies the birds need gravity to lift their Page on beak.