Somewhere I have plans but I've built enough that I don't always follow it exact. These I made from scraps that were laying around in the barn loft. I have some plans I'll see if I can find them. I think they called for a 1" x 10" x 10' board per box. The front I make 24" give or take with mesh on the front for the adult and a longer piece of mesh on the inside for the ducklings. The sides should be about 23" to leave a gap at the top for air circulation. The back is about 30" to leave room to anchor on the top and bottom. The top should overhang the front 2-3". One side should open for cleanout. I usually put about 3-5" of sawdust in the bottom. The opening is roughly 3" tall x 4" wide. I like to add some shingles or rolled roofing to the top to make them last a little longer.
I'll try and take some pics as I build more this afternoon and we can put a sticky on the DIY section.
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