so ive been observing some interesting behavior in my girls recently. i let them roam the yard all day now, i had fenced in an area maybe 500sq ft and let them in there will all day access except when id close up the coop at night which has about 40sq feet or dirt/weed access.. and now im letting them roam the entire yard except some off limits areas that have small plants easy to be stomped. anyways, now that the coop door is open at night until i go close it a bit after its dark so that i know theyre all inside. the same hen stands guard in the coop door every night, and when i close the door to the coop run, she turns around and goes inside in a minute or so. but she stands in the doorway blocking anything else from coming inside. think that is a trait coming out since they know there is a potential danger being opened, and in the absence of a rooster that one of the hens is taking on the protective role in its place?