As I pulled into drive after work, free-range chickens exploded out of barn with most flying toward house. Lucy ran from front porch to barn. As I got out of truck I could see one free-range hen up on pen in barn giving alarm with other birds inside pens doing same. Something came into barn from backside and Lucy promptly ran it out, Ben positioned himself on hill but did not run in. He was clearly looking for something. I took three hours for last stag to make his way back to barn. Birds that flew longer distance were hot for a good 20 minutes.