Utopia 4-6 is the sixth level of Utopia.
Not hard to three stars because if you use two birds, you still get 3 stars
One strategy for Utopia level 4-6 is to send the first Blue bird toward the top-left bumper, splitting late. The level is about a bit more luck than skill after that, hoping the birds push kernels and popcorn into the pigs to either pop them directly or force them into the gravitational field on the right. Using two birds is still sufficient for three stars, so don’t be afraid to take another shot maybe toward the bottom-left bumper if necessary.