My Delawares will eat any bugs that catch their eye. I've even seen them jump in the air and grab a grasshopper, wasp or dragonfly mid-flight.
I'm allergic to bee/wasp stings so I love it. All the men on my side of the family have terrible bug bite reactions. When I get bit by a mosquito it looks like a bee sting. When I get stung by a bee it looks like I got smacked with a 2x4!
We used to have a LOT of wasps of all kinds on our property. I don't know the names -- red ones, black ones, black/yellow striped ones. And the giant ones as big as your thumb that sound like a Chinook helicopter when they fly by. We'd get them in the house every time we cracked a window without a screen. Drove me nuts 'cause I love to prop open the door to my office when the weather's nice but always ended up with wasps in the house.
I can confidently say since we got the chickens this spring, and they have been free-ranging all summer, the amount I've seen around here has dropped off significantly.