I noticed a number of bald-faced hornets that seemed attracted to holly leaves. I don’t know if they are trying to get some of the wax off the leaves for their hive. I have not found the hive yet. A couple of years ago they built a basket-ball size hive in my backyard, and made a video. 24-July-2010 and images last year 23-July-2011 I understand that the bald faced hornet is easily upset, and unlike a honey bee is able to inflict multiple stings — so do want to find the hive.