Where there are flowers....

....there are bees!
In preparation for my exam at the end of August I have been given a month off from my lab work. This means I don't leave the house nearly as much as I normally do so today I'm posting a shot of the newly-blooming dahlias in my front yard. This one just started to open today.

Every time I go out to check on my flowers, I see 2 or 3 bees hovering around these spots on the tree that my flower bed is built around. I'm not exactly sure what's attracting them but it must be good because they're always there.