Lacy Leaves

My giant sunflowers are about to bloom. 

But the leaves are being shredded. I looked for bugs. There are none. But I now have lacy leaves for whatever reason.

Today I discovered why I have lacy leaves. Little finches are eating them.

What are you looking at?

Oh yum. These leaves are so good.

I just can't get enough.

Back off this is my leaf.

Can you imagine what they will do when the plant has flowers?