I don't see windows in your new Duck Haus it's going to be one HOT box with out some air flow. I really do like it and the color too.
The duck run. We're going to make several improvements... the first one is going to be digging down about a foot or two under the pool and putting pea gravel under it, so I can just drain it into the gravel. We're going to do a modified French drain system. We'll be using the large kiddie pool that we had as the brooder, too.
I have also been ordered by one of my friends to put letters up on the side of the house pronouncing it the "Duck Haus", so the ducks know where they live.