Thanks for the info peepsCA. I read what people say about the hens and my original hen certainly isn't like the way they seem to be described. She is not the noisy one at all, she is very mellow, easily handled and petted. Now the new hen is much more vocal but that could be because she is in a new place and doesn't know which dogs, kids, adults, are supposed to be around, and she has always been allowed to free range.
I have her in a big cage in the run with the other guineas. My flock leader, Rocky, who is not very nice, keeps pecking her cage trying to peck her. My other cock, Bob, is much nicer, less aggressive, and seems to be my first hen's mate. I was hoping that Rocky would take to the new hen in the hope that he would stop being so aggressive to Bob, pulling out his feathers, and chasing him up into trees when I let the two of them out to free range.
My hen did finally start laying her eggs in the nest though, which is a good thing. I did see Bob go into the nest and cover the eggs with pieces of hay, picking up each piece of hay one at a time and laying it over the eggs. She now has 9 eggs in the nest but so far no sign of her wanting to sit on them yet.
I love, love, love my guineas, with all their quirks and annoyances. They have been such a learning experience for me and I spend as much time with them as I can. Now if I could just get Rocky to understand that I am the leader and not him, things would be much more peaceful for the other guineas.