Went out to turn generator on to top off batteries just after dark. I heard a familiar squawk. One of the 15 week old FBCM pullets did not make the door before it came down. She is always the last one in. Trying to catch a black Chicken in the dark is a pain. Finally got her cornered and grabbed her. Door does not shut until it's almost dark? Really don't want to make the door close any later. I hope this is a one time thing!