Yup! I had to remove a branch from a maple in my yard two years ago and it was infested with Carpenter Ants. Great, big, nasty, black things they are.
Those are the ones. I've never had them bother my orchids.
Here we don't have a big ant problem. They probably drown in the winter, since we are in the rain forest. Then they bake in the summer. In Ontario we had ants in everything.