Crows used to pester my old boston terrier like that every day. Then one day I got sick of it and went out in the yard with a bb gun and killed one and my boston ate it. They left her alone after that.
More evidence that they are smart.
It’s against the law here to harm them :/ (we can’t even own a bb-gun here >.<).. BUT, I had heard of a suggestion from another expat here that works :)
Load up your super splasher water gun (or whatever they are called) with vinegar and shoot the birds.. they learn the first time ;)