I'm not sure that the noise is being created by the 1 inch + fly-like insect I've found around this spring. --- some are grey/black a bit over an inch or so with fly type wings, others are a pastel green with somewhat different wings and a tinge of yellow to the green. I first noticed these creatures in my outstanding crop of weed mustard which (although less after last year's mass pulling) is still plentiful and exceptionally succulent this year. My property has my house on the top of a hill with the land slanting down most markedly to the east and north. (I am 5 miles up Juniper Canyon in Ochoco Land and Livestock 'subdivision'). The noise was first noticed in the junipers to the east of the house, the "bugs" to the northern edge where I was pulling mustard near the manure pile. In the last week to 10 days they seem to have moved up the hill to the trees near the house (small grove of Aspen in back - north side) along with about three pines, some ornamental juniper and a couple of spruce along with a few fruit trees etc.). Who are these guys? Should I wage some sort of war on them? And then, yes, I will send another email regarding my crop of mustard.