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slug Created with Sketch. Science Questions Why do cardinals peck their beaks on glass?

Why do cardinals peck their beaks on glass?

Some birds, such as cardinals and robins, may attack their own reflections in glass windows or doors. These birds claim a home area and protect it by chasing away other birds. When a cardinal or robin sees its own reflection, the bird may think the reflection is another bird and peck at the window to chase away the “intruder.”

We don’t know of a trick that always makes birds stop pecking at their reflections. Some people tape a sheet of white paper on the inside of the window to reduce the reflection. Others have tried putting up a cutout that looks like the shadow of a falcon or some other enemy of the pecking bird. Maybe you’ll find the perfect solution.

Photo by: GettyImages|BirdImages

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