So I got two Pekins and two Cayugas in December, all (supposed to be) females. They are almost nine weeks old. One of my Pekins does this thing every once in a while where she vibrates her chest and throat and then juts her head forward over my arm if I go to pet her. I know she's communicating something, but I don't know what. Any ideas? Also, I like to turn over logs and rocks for them so they can find more slugs and snails. They always nibble on me when I crouch down. Are they being affectionate, or just looking for food in the folds of my clothes?