As far as I know roosting was done on a c.ear night never did get the knack myself lolNo mate darker and windyer the better.What even without lamp ?I was led to believe that a clear full moon night was good for shooting roosters big black shapes easy to see against the bright sky.Exact.y what I was told tried it but my eyesight isn't to good so no good without a lamp lol No need for torches or anything just go on a cloudy night and you can see really clearly looking up at them.