Roberta,

We lived through the 17 year cicadas in Virginia and I saw cats, squirrels, and dogs eating them. I bet chickens would like them, and guineas as well. They are probably pure protein. The whole experience was really interesting at first, then, they began to lay their new eggs in my young dogwood trees that I had planted. There were so many of them that they ended up weakening the young branches and they would start to snap in half. Finally, I covered the young trees so they couldn't get at them. The noise was deafening for a while, but it didn't last too long. My son was only about 5 and he thought the whole thing was facinating watching it hatch out and dry on the tree.

I was just thinking that guineas would LOVE them!
I have seen guineas chase a bug for a block or more... talk about fast food!
They also love to get in trees, where the cicadas can be found on any given summer evening... or atleast it sounds that way.
I think the chickens would have less interest in chasing a bug up a tree.

Guineas are great at eliminating ticks and mosquitoes from your property too.

Go Guineas!