With added bee

We grew this Rowan from a berry. Two years ago when we moved here, it was 4ft tall. Now it's a foot taller than me. Even as former beekeeper I was fascinated to watch this bee working from flower to flower, tucking the pollen under it's rear armpit*. It's hard to make it out against the white of the blossom, but can you see the sac of pollen on the bee's leg?

You know what's coming, don't you?

* Can a leg have an armpit anyway?