"The Native Americans called elk “wapiti”, which means “light-colored deer.” This comes from the word “waapiti” meaning “white rump.”
"However, Early European explorers thought that the elk resembled a moose. In Europe, a common name for a moose was an elk, so it basically got misnamed by the explorers in this context."
some will say that elk should be treated in the same manner as most other wild ruminants where the singular and the plural are the same (bison, caribou, deer, moose, sheep) and that expressing the plural as elks, which is much less common and harder to say, continues the misnaming tradition...
it is, however, hard not to think it's still better than ottawa's precedent that would have given us the "greengolds". or the "goldgreens". go elks go!