I used to live in shootin' country, and at certain times of the year the road would be literally carpetted in partridge. They were very reticent to lift over the hedges, so you just had to drive with caution through them - for about half a mile!

Over months of practise I discovered that the ideal speed was 22mph. Any faster and you killed them, any slower and they just flew in front of the car; at 22mph, they knew they had to take avoiding action and would fly into gateways or even over the hedges if they had no other option.
Fleecewife, look away now.
Oh, and if you
do kill a large game bird at 22mph, it's still pot-worthy.

26mph and it's a mangled mess.
