I have two 7 week old chicks. The white one is an easter egger and the tan one is a buff orpington. A few days ago the white one was making a new sound--head up and long low sound. It got me thinking she is a he, but I'm not sure. She did it maybe 2-3 times and no odd sounds since then. The tan one was opening her mouth and sticking her head up a lot this morning, but no sound. Any thoughts what gender they are? I hoping they are both pullets....would be hard for the other one to have to remove one of them.