Rilla, our cockatiel, is our watch"bird"! She has a special whistle when a car pulls in our driveway, or someone walks up the front steps.

As for Malone, he lets us know someone is here by howling (not barking), but he's not very accurate. He'll startle us awake in the middle of the night if someone has come home at the neighbors across the street (which is quite a distance). He gets very excited over noises.