My thinking with the albatross is that I don't think they are that common in zoos and in general, I'm guessing a lot of people haven't seen them. Our tour guide said we were lucky to see one as he had rarely seen them. The margay was included because I know they're very rare in U.S. zoos but didn't know how common they were outside of the U.S. The one I saw was at a wildlife sanctuary in Costa Rica.