What kind of bugs are doing this damage to our sunflowers? I’m misleading you. It’s birds. Sparrow-like yellowbellies. They land on the “branch” of the leaf no further out than the leaf head. Any further and the leaf would break away. And they slam their beaks into the leaves at that point to get the small caterpillars there, ripping that small section of the leaf away, leaving holes or enlarging them. That’s why all the damage is up at the top of the leaf, and none below. I watched this. Never seen anything like it. Please, don’t ever call me Natureboy.