A few weeks ago my husband and I drove to Santa Barbara. On our way we spotted a vineyard that was covered with a netting to keep the birds from eating the grapes.
It was nice for the pickers because it was shady and cooler while picking. I have never seen this before. Where we live, the farmers use blank shotguns set to go off every 60 seconds or so. It works well to scare to birds away.
They were as far as the eye could see long.