My Collins 2010 Diary has a trivia/pub quiz question for each day of the year, with the answer conveniently printed, upside down, below the question. The entry for 24 June is 'How many eyes does a bee have?' Answer: 5.
I passed this information on in a comment on a rather grumpy, bee-related post by a fellow-blogger, in the hope that it would cheer her up (I think it did!). But then I wondered: can this be so? If it is, then it's the only example I know of a creature having an odd number (one excepted, of course) of any organ. (My blogging partner obviously did some exhaustive research on this phenomenon, because her follow-up comment was 'How strange is that?')
Wikipedia is oddly (sorry, no pun meant) reticent on the subject. Its bee entry (which is suspiciously hard to find) doesn't mention eyes, except for a scary profile picture on which something called 'composite eye' is labelled. They don't tell you how many components there are to this, but assuming that our bee has two composites, it would have to be two-and-a-half for each, wouldn't it? This seems unlikely. Perhaps my diary only counted one eye. Hah, Collins!
The research must continue, given the power bees apparently have over the survival of our environment (not to mention the honey and its impact on bears of little brain). But I can't do it. My mind has shifted to the related, and equally challenging, topic of bee's knees.
Of course, the diary item was for ten days time, so as the Boss says, 'none of this has happened yet' ...