In the past two weeks I've noticed one of my chickens acting strangely. When I walk into the coop she squats down and spreads her wings out a little. I leaned down to pet her and she did that thing that cats do when you run your hand along their back towards their bum - she raised her bum! Another of my hens did the same thing just yesterday - squatted down and raised her bum when I pet her. It's kinda funny but made me wonder if this is what they do when approached by a rooster.