Okay...first you have to be able to kill "the" bird (lets constrain ourselves to "one" right now; you'll see why!
The best way to kill a wild goose is a 12 gauge shotgun with either #2 or BB shot; regrettably the birds know this too...you will see how the flock whether feeding or sleeping always has a number of sentinels on the perimeter, looking out for potential problems like Jasonr....and, at this time of year, they will typically run away from you, or, if necessary fly away...they are expert at spotting guns, and won't let you within 75 yards with one, buy you're not going to try that on the campus green, I hope!
And they do not die easy, either!
If you manage to somehow possess yourself of a dead wild goose, your next task is pull out each and every flight feather (Hint#1 at least a garbage bagfull will be produced(Hint#2 Break off the wings at the first joint-they are incredibly difficult to pluck)
Once you have the carcass plucked, it will be completely covered in "down" fethers (why geese don't get cold), so take the carcass to the enormous pot of water you had heating on the stove and had the foresight to melt about three to five bars of paraffin wax into...
Immerse the bird in the waxey water several times, until a significant quantity of wax is caught up in the down....remove the bird to someplace cold, and secure from dogs and cats, and allow the wax to "set" (and you will want a LOT of wax on it, so repeat the dipping as required)(remember to run the hot water a long time after you empty the pot-the wax clogs the drains)
Now crack the wax off in chunks, and watch as the down is "easily" pulled off the skin...
Go over the entire carcass, with tweezers and pull all the "pinfeathers" out-these will be about three quarters of an inch in length, and require carefull removal (they don't taste good!)
Chop the head off, and cut away the neck where it meets the spine (a cleaver will be handy, and a chopping block---see how you measure up as a 15th century "executioner"-
Make an inscision the length of the gut cavity, and very carefully circle the anus in order that you can cut it, with the "plumbing" attached without spilling...and carefullu extract the innards (these give their own, very "distinctive" scent, so you might want to do this outside...
You will likely have to do some "exploratory" work with a knife and/or fingers, to remove the lungs. Check at the very base of the tail, as this is where the kidneys repose, and you really want them out of there...
When you are sure you have the last of the guts out, and you've decided which is heart, liver and giblets and extacted same, firmly seal the guts in a double encased plastic bag and throw in the dumpster, as cats and dogs will find the scent of all you have stripped away "fascinating", and your neighbours might resent this...
Now, wash the bird inside and out.
A bread stuffing, prepared as for turkey with onion and sage is one route, a fruit based stuffing, based on either apples or aranges is your other stuffing option.
Cook as you would a turkey, but I'd suggest suspending the bird over the roaster with skewers, as goose dribbles grease like no tomorrow (I'm talking pints!)
It will be all dark meat, so an interior meat temperature, taken from both the breast and the thigh, should read 170 degrees (and cover in a foil tent, it will rise to the proper 180 after you've removed it)
Check the laws in your Province or State about "legal means" of taking migratory game birds...you'll find its strictly regulated. Likewise, if you are not using a gun and "hunting" in the "conventional" sense, the SPCA may havea few things to say in running up some charges on cruelty to animals....
Hunting wild goose is one of the most challenging hunting and shooting you can find, let alone the camouflaging, "calling" and shooting skills you'll need to acquire...remember to keep shooting at the same bird until it goes down, dead, as the rest of us take a dim view on just shooting them up and not retrieving the birds (and you can get jailed for that, too!)
Plan on being in the field about 0400, for geese!
Lifter