It sees its reflection, and may think it is seeing a rival of its own species. Same as when you put a mirror in a bird's cage.
No it doesnt.It is usually a warning.
The word 'tapping' is a special case. It in its various forms can be used as both a verb or onomatopoeia.If you were to say, "The bird was tapping at the window.", it would be categorized as a verb.On the other hand, if you were to say: "There, once again, appeared the bird at the window. Tap! Tap! Tap!, I heard on the glass."The 'tapping' would be onomatopoeia.
I suppose you could interpret it that way, since a bird tapping on a window is an omen of death.
the tapping is called "MORSE CODE"
knocking
Maybe it wants to come into your house? Hungry? Water? Give it some food. Maybe a bit coocoo in the head????
Birds are territorial, especially woodpeckers. The bird has accepted your home as his ... you could hang some CD's from strings to attempt scaring the bird away. Fake owls simply do not work at all.
The woodpecker
In the excerpt from "The Raven" by Edgar Allan Poe, the speaker is reading to forget his sorrow and grief over the death of his beloved Lenore when he hears a knock at the door. Initially, he thinks the sound might be the wind or a visitor at the door in need of shelter from the storm.
Tapping on a door or a window is called gcoinnkk
Woodpecker !
"The bird flew out the window" might be what you want.