see this thread for more ideas and discussion with pictures.

Wood Ducks

The man who gave me his plans (linked in that thread too.) said they prefer aspen shavings over cedar, not sure why. He didn't mention when to put the shavings in though.

Sounds like other PB members had success attracting woodies with decoys.

i also see them always mounted low to the ground just above the pond water but in nature I understand they often are 15-20-30 feet up in the trees. I wonder if trying to mount a box higher in a stand of trees where there is some protection might work too?