The Duck Roost

I was extremely fortunate to get access at a great lake / swamp area that was a great waterfowl spot.  I set up in a swamp I have yet to hunt and was surprised there was even open water in the shallow flats.  As I set my decoys in the pitch dark, I could hear ducks ALL around me. A few nervous ducks couldn't take it anymore and decided to get the heck out.  This set off a slight chain reaction and I ended up listening to what sounds like a thousand ducks take off around me in the dark. It was nuts.  The rest of the morning, I watched ducks take off all around the swamp, but none were interested in circling back into my spread...go figure.  And I opted not to sky bust the few that flew high over me.  Needless to say I was in a roost, and I know not to shoot these up.  I plan to return for a mid-morning or early afternoon hunt where I don't spook the entire flock that is working this roost.