Most anything, surprisingly. Even wildlife photos can be successfully pulled off in black and white, as long as you are not using them for teaching. What would someone who has never seen a cardinal think if all they had seen were black and whites? Would they wonder why a bluebird is named that?
Of course there is nothing like seeing a Bald Eagle, especially up close, and against a blue sky, or clear mountains, and I am certainly not denying the joy at good color photos of them. Here ya go, an experiement, which one is better?
Another case of a decision to make, and the knowledge to make it.