Enough! San Jose woman wants bird to stop tapping at her door
Maybe he thinks he's a raven, or perhaps, by adding food into the fray, you have given him something to protect even after the reflective challenger disappeared.
Why does this robin insist on repeatedly flying into a Moraga couple's glass door?
If the robin sees his reflection or the surrounding landscape, the solution remains the same: make the window less reflective with various temporary and permanent methods.