Hmmmm....haven't got to the point where we eat roadkill ourselves but last summer we collected road kill and brought it home. I took an old coffee can, drilled tons of holes in the bottom until it looked like a sieve, another couple in the top to thread a shoe lace through (so it would hang), and after that, whenever we found road kill, we popped it in the can. The flies lay eggs in it, the maggots feast on the carcass, and then drop through the holes in the bottom where they are snatched up by the chooks. Actually, I kept a planter base under it and almost all the maggots landed in that. Once maggots start dropping, the chooks hang around intently, each wanting to be the first to grab them as they fall. When I opened the coop door in the morning, they made a beeline for the planter base to eat the ones that fell during the night. Great source of protein for them! The best was a rabbit DH found. After the regular maggots, we had a crop of soldier fly larvae. I let the chooks have some of those (they were too big to fit through the holes) and then put the rest in the compost bin where they did a great job of aiding the composting process.