I have some chickens penned singly in orchard. They are being assailed by some sort of fly that distracts them a lot. We have had an exceptionally wet spring. Insect also targets me. Will be trying to ID and find a way to control effects. A broody hen in particular is targeted and I do not want to break her broody cycle by moving her. I have birds on four locations over a stretch that is about 150 yards in almost a straight line. Wind direction might be important. Same insect is normally an issue near water. Also some mosquitos.

I didnt see any ill effects on the strictly outdoor cats, other bugs, lizards who eats the bugs or anything else except the mosquitoes, gnats, and wasps. I sprayed both neighboring properties, the pasture to the back and the places across the st 10 times in total to keep the bugs at bay enough to bring my 3 little ones outside. Had no more losses when i figured out what the problem was and adressed it. Must not be that serious for you. They disappeared after 8 wks of breeding, others have noted they dispersed as winds picked up because theyre poor fliers and still others say once its hot for more than a wk. Vanilla extract can be used but has to be reapplied often. Fans can be Heaven sent. 
