Here in NJ in the afternoon or early evening, I can go in the backyard
and see these small bugs, small like mosquitos or gnats, that fly
around each other in a (2-foot diameter?) grouping that hovers about
4-5 feet above the ground. What are these ? Should they be left
alone or otherwise ? Thanks.
Sounds like midges. See:
http://www.colostate.edu/Depts/CoopE...sts/midges.htm
sed5555