In one coop that had 100 pekin layers, the ducks were often noisy at night until we added dim lighting.
As per http://www.duckhealth.com/housmngt.html
"It is also beneficial to provide dim light by means of low wattage bulbs during dark periods to help prevent stampeding if the flock is disturbed and to discourage feather pecking."
As per http://www.duckhealth.com/housmngt.html
"It is also beneficial to provide dim light by means of low wattage bulbs during dark periods to help prevent stampeding if the flock is disturbed and to discourage feather pecking."