Over a week ago I noticed a couple of larvae that had been pulled out of my strongest colony. Upon my next inspection I noticed the bees had pulled a few drone larvae out of their cells. Every other day or so I find a couple more on the front porch. Today I noticed five of them on the ground in front of the hive.
My first thought was, "Good! Hygenic bees doing their job." I took a close look at a few of the larvae and I didn't see any varroa stuck to them. So I'm a bit puzzled. This is my fourth year in beekeeping and I've never seen it before.
Is this anything about which I need to be concerned?