The little rescue hen we brought home a few days ago is so unwell, we cannot really tell her breed. To be honest, she looks like: A Swedish Flower hen .... but with the slight muffs and poofy neck to hint at Ameraucana/Easter Egger, and has a Belgian D'anvers tail. A Belgian D'anvers..........but she's got a straight (single) comb and is almost Ameraucana-sized. Any such thing as a jumbo D'anvers with straight comb, pink legs? Her color is (this is bizarre and gorgeous!) Mille Fleur over quail. (honest) She makes a sound I've never heard before from a chicken: A high-pitched "Brrrrt. Brrrrt." when I pick her up gently or something new happens to her. We've had other rescues just as weak/debilitated, and they made the usual chicken bawking, although it was a bit warble-y. What breed makes this "Brrrrt" sound? Thanks for any input.