Farmville Crop Circles are available

After the Alien Invasion, Farmville Market is offering Farmville Crop Circles for coins and Farmville Cash. Each crop circle takes a 3x3 field size which means that by decorating your farm with 6 available circles, you will be forced to spare 9x6 or 54 Fields for them. Thus you will NOT be able to plow, seed or harvest these 54 fields. Four of these crop circles can be bought for Farmville coins.

Two of these crop circles are available for Farm Cash. These crop circles are called as Crop Cow and Crop Duck.