what do magpies like to eat appart from baby birds

[chris59]

I get a few magpies visiting my garden, and I find them great fun to watch. But as the time is getting closer for eggs to be laid, I would love to know if there is a food that I could put out for the magpies, that might get them to leave the baby birds alone. I know they have to eat , but if could find a food that they really love, the smaller birds may get a bit of relief.