My parents have been battling the same birds every year. They make a nest, my dad knocks it down, they build again, he knocks it down... and over and over.
It makes me sad. I secretly cheer for the birds. Yes I know they causes messes, etc. but they're so pretty.
We have robin's that build a nest under our deck every year. They swarm at my dog and everything when she goes down the stairs, and they are so loud and annoying!