Guineas can give the appearance that they mate for life but that is not necessarily true. I have at least two of my males that are currently with different hens than they originally were with.
I had a hen that had lost her mate choose a specific male as her mate. From fall through the start of spring spriing, she would spend all of her time with him. Once breeding season got going good, the dominant male would take her away from her chosen mate. Then in the fall she would go back to her chosen mate. Now that he has passed on she stays with the dominant male.
Maybe because I have so many hens, the mating thing does not really seem to be up to the cock. I started with 1 male (Ghost) and 7 females in a harem. The new guineas that I added paired with some of the fringe females from Ghost’s harem as well as some of the new girls. I had one very tightly bonded pair of new guineas where the cock, Kingpin, lost his mate to a bobcat. I was surprised at how quickly he took a new mate, Viceroy. Now Viceroy is broody and Kingpin hangs out with the bros from his brooder group. Another younger cock, Victor, started the spring with one mate, Viceroy, who is now Kingpins mate. When Viceroy went broody, Victor ditched her and took up with Ghost’s former fringe girl, Scout Black, who had paired up with younger cock Kaiser, who was killed by a car. So Scout Black has had three different mates during the past year. Scout Black has been broody so Victor, Kingpin, and Bruiser are all hanging out together, along with Bruiser’s two hens. As a final note to our mate swapping soap opera, Ghost’s core mate Pearl flirts with Victor and acted for awhile like she might leave Ghost for Victor (who is probably her and Ghost’s son)!
What I find most interesting is that the dominance hierarchy for the cocks seems almost entirely separate from the hens. Bruiser is the most dominant cock and Ghost is the most subordinate. But Ghost has 6 hens, including the two most dominant hens, Cherry (#1) and Lemon (#2) Pie. Also, Scout Black was the most subordinate, picked on hen of Ghost’s harem last year. When SB left him for Kaiser last winter, her status rose considerably with all guineas. When Kaiser was killed, her status dropped very low again. When she paired with Victor, her status rose considerably, and she started hanging out with her old harem girls again, dragging Victor with her. So the free ranging group was Ghost, Victor, and 6 Ghost girls plus Victor’s girl who used to be Ghost’s girl. The hens got along fine, but Victor quarreled often with his subordinate father, Ghost, who seemed quite put out that Victor was now following them around Everywhere!