Thanks. In the example given, it looks like "other" is now missing. The issue is that Rails i18n, the i18n framework that Encyclopedia of Life uses, is not as smart as MediaWiki's. In MediaWiki, any undeclared form will use the other form, but in rails-i18n, ALL forms must be defined in all cases. So if plural is used on a message for EOL, and it's translated into "uk", it must always look like this:
I hope this clears up any confusion. I know it's not easy. Thank you for volunteering your time to make EOL better!