Now that is a hoot! Or maybe I should say a ‘squawk’. My little green conure, ‘Pepe’ watches out the screen door and if he sees anyone at the gate on the driveway he lets us know also. He also joins in when the next door neighbor’s dogs start barking the alarm. As a human-bonded bird he is extremely attentive to any human activity around him.
I have a graphic sign in the front window that says “Warning! Attack Parrot Security” with a graphic of a frowning bird with a nasty beak.