Really like this one Kieth. The orange spikes lead right to the subject and contrasts well. Your dof is about as good as it could be. I'm impressed you weren't tempted to over saturate or sharpen. Some may say you could crop from the left to move him slightly off center but I think it works well this way, allowing the curve/arc of the flower to match that of the bee. If you wanted to get super picky you could get rid of the pink in the BG behind his head. Nice shot.
Great image Keith, a beautiful looking bee, with plenty detail and great composition.
I have to say when I spent time in Canada in 2006-07 I captured a bumble bee coming and going from a small burrow, which was very interesting to see. Is this common behaviour?