We were driving back roads of northern MN forest bogland over the holiday weekend and came across a couple of families of Ruffed Grouse by the side of the road. One female accompanying her four chicks was disturbed enough by the big white predator (our car) bearing down on her and her family that she got quite annoyed, ruffling her feathers to warn us off.
Ruffed Grouse are usually found in the interior of the deciduous forest where their mottled plumage helps camouflage them. You rarely know they are there unless you hear a male drumming or happen to catch them flying in a burst of speed away from you. The hen may have led her chicks to the roadside grass to hunt for insects. There certainly was a great surplus of flies of all sizes buzzing around us each time we stepped out of the car.