Leaf cutter bees having a feast

I've never seen so many leaf cutter bees in the garden before this summer.

Somehow the combination of native plants we have growing in the backyard are the perfect menu for these bees.

In the image above, one of them is on a Klondike sulphur orange cosmos flower.

And here is a another leaf cutter bee nearby, on a stalk of sapphire salvia blossoms.

This must all be very tasty.