This is an odd questions and I can't find an answer anywhere. When we go out to see the chickens, they run to the gate door as most chickens do, but several run up to us, turn there back to us, spread their shoulder blades to expose their back and tuck there tail (I equate it to arching our backs to get it scratched when it itches). A friend of ours says that is how they posture for mating, but why would they tuck their tail? Wouldn't that defeat the purpose? We don't have a rooster, so if that's the case, they are out of luck! Also, if I am petting one, others will run up and try to get under my hand and "posture" the same way. To me, it seems they want to be pet. Anyone have similar experiences?