You can buy a Fox Cannon from the Foundry. Just click on the building and select the Build Cannon button. Feeding ten Geese might make a Fox to appear. This gives you the chance to use the Fox Cannon. You also need a Powder Keg to use the Fox Cannon.
To get Scrap Metal pieces, you need to request them from your Frontierville friends. Click on the Ask for Help button to post a request on your Wall.
Once you’ve completed A Frontierville Fox Hunt, you’ll receive 100 XP and Decorative Cannonballs. You can also share some Poultry Puddings to your Frontierville neighbors.
If you didn’t get a Fox after feeding ten Geese, get the Daily Bonus from your Poultry Coop for a sure Fox appearance. Well, that is if you have lots of Chickens in your homestead.