Leave it alone.
First of all, it is illegal under the Migratory Bird Act, it is illegal to disturb the nests of native birds (although, if is in the way of something, I doubt they will care if you move it a few feet after the birds have left).
Second of all, for your own health. Birds have many lovely parasites that can take up residence in their nests - ticks, lice, etc. They can also carry diseases that you really don't want to get.
Third, nature will do her thing. Most likely, within a few months the elements will have either blown the nest away in its entirety, or will have destroyed most of it.
If you can leave it alone do so, sometimes the birds that nested there will come back to nest there again.
A bird's nest is called a "nest."
bird's nest = ken (קן)
When bird find mate they will build a nest
Yes,bird nest fern is alive.
NATURAL pH FOR BIRD'S NEST
A Cukoo Bird builds it's nest in a chimney
A nest, or a bird house.
I have never heard of a bird making a nest in a bird bath. I believe they only make nests in trees. I wouldn't worry about a bird making a nest in your bird bath. It's more used as a decoration.
The Weaver Bird.
A yellow bird's-nest is a plant, Latin name Monotropa hypopitys.
It is quite possible as there IS a delicious soup that is called "Bird's Nest Soup". It is considered to be quite the delicacy & IS NOT made from a bird's nest.
nest