I very much like the last one Chris. I think the perspective of the 15mm worked really well for that scene. Nice use of flash too, and also the low down angle of view giving the sky and OOF trees in the background - I love that. The whole thing works very well for me.
To my eye at least it leans a little towards the pictorial rather than the strictly natural, and perhaps that's why I like it so much! (I have ongoing debates with myself about the naturalness or - more often - otherwise of my images, both flowers and invertebrates. Personally I've pretty much given up on strictly natural and stopped worrying about it.) I think that is a really appealing picture.