@ frenchblackcopper - If they are to ever ship any of the birds to USA or any country in the world, you'd probably get a rather expensive price since people really adore money like crazy here
Wouldn't know about the diet they give the birds, though.
@ SuperPeacockMan - That has to be checked, thus I will see if I can go to the zoo hopefully this Saturday, or next week. Weather's been pretty bad lately.
@ AquaEyes - I hope I will answer your first question with this : I'm not sure if the peafowl's been here for a long time, and since I only started to pay regular visits last year, I do not know if there were any breeding opportunity for this one, nor about the offsprings. We do have some Dark pieds (I don't remember if they are also considered split to white if that's different), with white primaries, and very small white feathers on throat, or I saw a peahen with only a single white feather on her back. As you could see we also have just pure whites, but they appear to be older than the peafowl we are talking about. The latter is the only one I saw with that "colour" so far, and I do recall the peafowl hanging out with one of our older white males for some time, then went it's own way.
I hope this was the answers you were asking for, sometimes, being french, it is possible that I might not understand too good. As for the oil palms, I haven't really paid attention, but I can check for you when I go back there, as well as I go check for the peafowl.