This season 7 week 4 epic quest requires you too hunt an infected animal.

The island is now infected with alien parasites. The infection isn't that severe yet so coming across alien parasites and infected animals will not be that common.

I found that infected animals are most likely found in the areas around Pleasant Park. If you go there and search around you might be lucky enough to come across one.

If you are unable to find an infected animal there is away you can infect a chicken yourself. Firstly you will need to find a chicken. There are no places they spawn in the same location every game but you should be able to find one roaming around the rural areas.

The other thing you need is an alien parasite. These are found in spores on the ground. They are not that common but I have found plenty around Pleasant Park.

When you find a chicken, pick it up and go on the hunt for an alien parasite. When you find a parasite it will not attach to the chicken even though you are carrying it. Instead it will attach to your head. This isn't an issue but you will need to go and jump in some water. Alien parasites don't like water and will detach from your head and attach themselves to the chicken. Now you can drop the chicken and eliminate it.

Check out the video below for a guide of both methods described above.