James Barnes, was the winter soldier for most of his life. he doesn't communicate with anyone very well any more. he has just been observing the others in the tower. He has gotten used to their presence and Routines. that is until Clint Barton AKA Hawkeye shows up. Clint adds some suspense. you never know what to expect from him. Bucky was definitely not expecting the Hawkeye to be part Hawk. Bucky takes a liking to the odd man even before he saw the wings on his back he was just more intrigued.