Between the rhea and crane I’d personally go for the crane. But with the rhea it does represent a much needed SA animal. Are either one essential imo? No the game would still be good with or without either one. Imo the title of most essential definitely belongs to a pelican. But since we’re talking anniversary either the crane or rhea would be great. I think somebody mentioned the Turkey in a earlier post. To me a Turkey would be great and imo brings more to the game then either crane or rhea. Personally I’m still quietly rooting for a clone type animal like the ABB.