We have 4 geese and 4 ducks in which we will likely get more ducks in the future. They will be free ranging during the day and locked up at night. The oldest are about 3 weeks old and we have to get a coop built! What are some essentials or things we should think about when building? I like the one pictured but we would enclose one of the squares to keep them sheltered/warm during the GA winter months.