This is one of my favorite birds, the mourning dove. For Dinahmow at More Idle Thoughts, no, I looked, it isn't as big as your Torres Strait Pigeon (that's a big bird!), but it measures about a foot or so long, so it is good-sized.
It is a ground feeder along with the little brown jobs. I've just recently put out a table feeder so that they get a little more than just what is spilled out of the tube feeders. I've seen them try to use the tube feeders, but they are very big and awkward and you really do feel sorry for them as they try to feed.