Eaten to date: two parsley plants, two calendulas, a tithonia, and a whole planting of pole beans. Whoever does it seems to chew the leaves in to the stems. Here's a picture of the pathetic tithonia, standing tall but entirely leafless.
As for the beans, here they are young and fresh and full of hope:
and here they are today, almost completely gone.
Going online is no help because everyone has a different theory. I think it must be bugs. A rabbit would hardly have eaten the beans in the cedar barrel and left the ones in the ground alone. Time to check Barbara Damrosch and see what she says.