Recently added bird feeders to my garden. California Scrub Jays have discovered them. They come in large groups (15-20) and eat/take/knock out all of the food within 4 hours, so the feeders are then always empty. It’s a bit like “The Birds” when they’re around. I’m new to this, is there some food that’s undesirable to them? I’d like to find a way to deter them without deterring the other lovely birds.