I used to have a Brassbird, didn't like the way it basically "stained" instead of developing a nice patina. a "Bronzebird" would be kinda cool too.
Did you have the machined finish? Polished brass will give a more natural patina. Wolfman doesn’t offer brushed bronze or copper for exactly this reason. My brushed Hone 15 has the same issue. Bronze can be much slower to patina as well.