We have noticed that when my son or my friend's husband comes in the house that Whisper retreats to his favorite perch, hunches down, and starts breathing hard and heavy. I have his cage away from the door. It's across from the door way about 14 feet and to the left about 3 feet. He doesn't do this when I come in. I don't want to stop the men in my life from coming in to my house. Any suggestions on the best way to handle this?