I have this Solar Powered Owl and it's a great bird deterrent. It's head moves every couple of minutes. It has kept the birds out of my yard. It's also powered by a solar panel so you don't need to use batteries.

as soon as things start fruiting, you need to cover the trees with bird netting. or set up frames over plants and drape bird netting over it. don't let the rabbits run loose outside. build an enclosure out of chicken wire small enough the birds can't get through.

Big cats.

What can I do to get rid of birds from my yard and gardens? I can't grow anything without them eating it. They sing very loud in the mornings. A few weeks back they attacked my rabbits. One of the rabbits died because of it. The birds are the small black and grey ones. I'm talking about 30-50 birds at any given time.