Usually, however, the Posted in reply to the post by off2socal: Nearly all birds will display aggressive behavior when they perceive a threat to their nest or young. How to Stop People from Mocking. There are ways to scare them off, but you'll scare off everything else too. They are very territorial birds. I've heard of pennies in a can working, but I'd put your cats inside Their words can hurt your feelings and make you feel small and alone. Birds that nest in close proximity to people; the northern mockingbird, American robin, gray catbird, and blue jay, are the most frequent assailants, and the mockingbird is without a doubt the most zealous—harassing, people, domestic animals, and other birds. Bird attacks usually consist of swoops, dives and chases. The problem with this is that wind and rain will quickly make the cellophane come adrift and ineffective. There are a few steps that you can take to reduce window attacks. Mockingbird babies are susceptible to hawks, crows, owls, ravens, domestic cats, raccoons, foxes, possums and tree-trimming humans. Not to be confused with window collisions, birds sometimes repeatedly and aggressively fly at reflective surfaces such as windows and mirrors. They should stop as soon as the babies leave the nest. The key is to break up the reflection the bird sees so it does not feel threatened by a non-existent competitor. However, there are a number of things that you It can be difficult dealing with mocking and teasing from others. Attacks are usually short-lived, but it may be helpful to understand what an attack is, why birds behave this way, which birds to look out for, and what you should do. Give 'em a chance. Give 'em a chance. Stop Pecking by Removing Reflections Some people try to prevent birds attacking panes of glass by covering the outside of targeted windows with non-reflective cellophane. How to Stop Bird Window Attacks Many of the best ways to stop birds from attacking windows are the same methods used to prevent bird-window collisions.