The jam is country to be compared with any place far away from the cities such as a farm, praire, woodland, river, lake, etc.

Skin Ideas:
Farmer,
Cow,
Rabbit,
horse,
chicken,
sheep,
Etc.

Blog ideas:
You could write a short story portraying a story about living in the country or the likeness and differences between the country and the city.

Mob skin ideas:
Basically you can make any animal that is found on a farm.

Basic Summary

Unranked Jam accepted up to 5 Maps, Skins, Mob Skins and Blogs from participants.
Accepts only standard resolution skins.
26 mob models allowed.

Read the about for more information.