Why aren't any Top O's showing up! I have had one show up within 24 hrs. Nothing missed just one showed up and they are supposed to be average? I looked in other gardens and the are showing up! So what's wrong? i don't have anything else growing that would block it!

You aren't deterring the mice and ducks, and they are commoner so will show up more frequently.

To add to Claire's response, here's a quoted passage from the "help" page (straight from the Developer):

"Is my Garden more unlucky than others?
All Gardens work in exactly the same way - no Garden is luckier or unluckier than any other.

"Obviously, being a game of chance, everyone will get short term runs of good luck and bad luck, and these will happen at different times for different players. But in the long run, this will all even out.

"If however you are getting an extended run of bad luck, then it's worth checking your garden setup as you may have made a mistake (for example, common mistakes are accidentally deterring the wildlife which you are trying to attract, or using the incorrect type of feeding table.) Or you may simply be trying to attract wildlife which is "very rare" and only ever visits occasionally anyway (always check in the Wildlife Guide and it will tell you how rare each type of wildlife is.)"