The Ostrich, obviously.
I know you think you want the house sparrow but you don't. You want the Ostrich.
An Ostrich will fill your freezer for a while and you can sell the feathers.
We're in a global recession. It's not good sacrificing practicality just to make a point.
If you have pets, you can also grind up the bones and much of the entrails and viscera into pet food which can also be frozen or made into jerky treats.
Just saying.