Okay the second picture there should be one female and one male for the Indian Blues. The first image i can only tell the one Indian Blue is a male the one you can see the wing, the other Indian Blue peachick that is eating in the first image I can't tell very well because I can't see the wing feathers. I sex them by the wing feathers and I haven't had pied peachicks before I have only sexed Indian Blues but I read somewhere a few years ago that you can sex any bird by the elbow part on the wing, if there is a bump in the bone it is female and if not then it is male. I haven't tried that I usually do coloring when it comes to birds were the female and male have different plumage. I only know three ways to sex birds: tint, or coloring in the plumage which depends on the bird usually the male is brighter when it comes to all birds but as you can see in my profile picture with my Fawn & White Indian Runner ducks how one is darker while the other is brighter but the female duck is the brighter so that is why I only do tint and coloring if the plumage is different, the other is the wing bone trick but I haven't used that sexing method because most of my birds have different plumage, the last which I usually wouldn't use but hatcheries sometimes use is were you squeeze the chick a little bit just to open up the vent and if there is a bump then it is male if no bump then female. I hope what I have told you about the peachicks sex will be right and the information I have given helps and is right. Like I said I have only sexed 5 peachicks and I was right but it might have just been luck I might be wrong but if I am right then I will assume that my sexing method with Indian Blue peachicks is correct please notify me if I'm correct when they are older. Once they are older it will be alot easier to sex them. Also at the begging of these posts were you posted both of your peacocks, I hate to bring the bad news but by the looks of it they are both males looking at the primary feathers. If you don't know what and where the primary feathers are they are the one furthest away from the body, the wing tips, that is where you can see the difference between male and female peafowls before they're ready to breed.