In rural parts of the UK it is quite common for cars to run over and kill pheasant. Usually they are hit at slower speeds so are in one piece.
The legal ownership of roadkill is a grey area, in law they are owned by the government roads agency but it is the responsibility of the runner-over to clear up the mess. Pheasants are owned by landowners ie private property, so the killer may owe someone some money. The commonly accepted pub-law was that the killer-driver could not pick up the pheasant but a following driver could.
In practice, if you see a pheasant, you accelerate and if you are lucky, bag it for the pot.

On a club ride we found a recent roadkill and a couple on a tandem took charge. The rear rider managed to pluck the pheasant before the ride finished.

You also find birds after organised shoots; ones that have not been found by the retriever dogs.

Cooking a pheasant on a stove is tricky, they respond best to slow casseroll. Slow roasting may work. It is quicker and cleaner to skin the bird rather than pluck.

Swans (those not belonging to the Vintners' and Dyers' Livery Companies) remain crown property and you are not allowed to eat them. I think we still hang people for this, or transport them to Australia or somewhere sunny. Quite a good law too, since swans are tough and stringy.