The vast majority of the cliff top was fine, just that one section was full of the little buggers!I was thinking a trip to the coast might have been the place to avoid them
Thunderbugs or thunderflies are no more than 2mm long usually but in big numbers, and tend to be in areas where there are crops. They appear in hot / muggy weather but have very short lifetimes as I understand it - a single day before perishing.I've not heard of thunder flies, is it another name for a midgie?They are