Yesterday afternoon about 4 o'clock we looked out our front window to see this:

Thousands of bees swarming around. This picture only shows a very small portion of what we were seeing. After about an hour they all settled into our walnut tree and formed a solid mass about two feet long and a foot wide.

It's now Monday...3 p.m. .....and they're still there. Umm...
help?
Updated to say: No, no...we wouldn't KILL them...no way!! B'sides, as of about 4:30 this afternoon, they took off in a hurry, heading east. Jack heard them from the garage and came out to see what all the noise was & saw them go.