Who's eating my Iceland Poppy?

I planted pansies, snaps, ranuncs, anenomies, California Poppies and Iceland Poppies in a bed. I also planted a bunch of kale, cauliflower and broccoli in another bed. Somebody ate the kale, broccoli and Iceland Poppies, leaving the rest of the stuff totally untouched.

I've now netted the kale and broc, but I can't net the Iceland Poppies.

Who did this dastardly deed? I live near open space in the (relative to the rest of the country) warm west coast. I haven't seen a rabbit in my back yard but there have been possums and reports of raccoons. I know it wasn't a bug because the plants were MUNCHED. That's why I think it's a durn varmint. What you think?