Anyone else have to deal with these creepy little ba$tards or is this just a Manitoba thing? They look like a grey flattened housefly. I call them spider flies because they come off the grouse feathers when you are cleaning them and land on you buzzing and running sideways like a spider, also like crawling up the inside of your pant legs, and on the back of your neck and into your hair, creepy as hell and practically need a sledge hammer to kill them too. Tough as hell. Years ago I never saw one but I’d say the last 5-10 years they are almost always on every grouse I shoot like clockwork. Even though I clean my birds in the garage it never fails that a few always seem to make their way into the house too.