How do you get twenty chickens and tewnty ducks on harvest moon ds?

Have a total of 20 Chickens and Ducks. This requires 5 Poultry barns. You can only have 7 barns total which conflicts with Red Ribbon's requirements. It works best if you build the 5 Poultry Barns required, rescue Woohoo, then sell the excess birds and hire Gotz to demolish the leftover barns. Then you can work on building the 3 Livestock barns since it takes more time to raise Livestock than to raise Poultry.