I have 12 ISA Brown pullets (no roosters) who've been laying since mid-July. They're very tame, and follow me all over my wooded fenced in 1/3 acre back yard. Lately, when I reach down to pick one up or even move my hand toward them, she'll squat down with her wings half-open and move from foot to foot, neck extended a little. Is it a request to be petted, a mating behaviour, enjoyment and anticipation of the back scratching she'll receive, or what?