My Rhode Island White went broody recently, but fortunately got bored and cold (it's a chilly winter in Australia this year, believe it or not!). So she's stopped huffing and puffing, and singing to her imaginary chicks to come and eat. NOW she purrs. Yes, purrs, very much like a cat, whenever she is hanging out with the others. Does this mean she is happy, like when a cat purrs? Does anyone else have chickens that make surprising noises?