Videos are on Youtube and one was linked as experimental effort in thread concerning pictures which I finally figured out.

Video below was made under poor lighting conditions where chickens flew from sawhorse in lawn to the location they spend most of day. Distance was between 225 and 250 feet (69 to 76 m). Elevation change was a positive / upgrade 6 feet (~ 2 m) over that distance. Flights were voluntary as in not motivated out of fear. Birds are standard sized American Games. I played around with bantams before and they do not have the endurance of speed of these games on the wing.

I am trying to also get video to show as pic with play arrow in posting which I have yet to figure out.

I have several other videos to link once latter issue is figured out.