Yesterday I had 14 mice & 2 Green Chams. (both missed) can anyone tell me why, surely it cant be because I have a birthday plant. Really dont feel like putting anymore food out today.

No, it's not just because you have a birthday plant.  That has no bearing on other wildlife.

But the mice will come, when you have no mushroom.

Just a thought, but have you had the complete set of red through to blue flowers the whole time?  Your green one showing on the plate was the most recent visitor, so I wonder whether you didn't have a red flower at some point, since your red one was planted only 19 hours ago, and at least some of your mice were spotted before that.  If you didn't, you'd only get mice because all of the colours of chameleon need all of the lower coloured plants as well as their own colour.

I did remove the Red at some point as I was going to finish with the Chams, even after I planted a new one I only attracted mice. I will give it another try.  See how it goes, then maybe think about going on to my Lions, Thanks for your help.

By the way, when I had a shroom I was feeding too many Dragons.

You don't need a mushroom, you can do better without.  You just have to be aware that you will get mice.

(and of course without a red flower, all you will  have got would have been mice).

Thanks hun, always did get mice, but not as many as that.