They're probably cluster flies. These things spend most of their lives as parasites of earth worms.Robbo3":1nqohbbv said:On a balmy afternoon recently we had 30 to 40 blow flies warming themselves on our south facing bricks.
Well you live & learn. I've lived in the country most of my life & never heard of them. To country folk all large flies are either bluebottles or blow flies.MikeG.":23rvg8id said: