Here in Mn.,the season will be open until 5:00 for the first time.Every year before this we closed at noon.DNR here did studies that showed that a noon closing served no real biological reason.Not many hens would be spooked of there nest with a 5:00 close.They didn't keep it open till sunset because they don't want people shooting them off their roost trees.With only a 5 day season for me to hunt in here,I'll take advantage of the new 5:00 close,if needed.