A Bee on the Twig

After spending some time wandering around the bush, I finally noticed a single bee on the twig. I assume it was sent here to observe a spot that could be found the pollen, but as far as I could tell, there were no good flowers around here except the shrub and twigs. So I decided to leave that thought behind and tried to take a picture of this lonely bee without making any trouble that might disturb it. First off, I carefully approached this bee with the gear in my hand. Focus was all matter if I wanted to get its picture, but after some clicks, it took off and never came back.