chimerism is a cool thing indeed. I have seen a couple pigeons and doves with it, not too many chickens tho.
Basically what happend to create them is that the egg got accidentally fertilized by 2 sperm instead of one and merge together in the growing stage making 1 being with 2 different sets of DNA. In birds it seems to always split them down the middle, one side one bird the other another.
It happens in humans(people with 2 different colour eyes for example), but in humans it is not as noticeble or clear as it is in birds. Not so clearly displayed. In humans its very spotty, some may just have an off coloured tuft of hair, others may have patches of skin that doesn't match the tone of the rest, eyes different colour and sometimes you cannot tell visually at all. Sometimes the outside is one DNA profile while the internal workings are another.
Basically what happend to create them is that the egg got accidentally fertilized by 2 sperm instead of one and merge together in the growing stage making 1 being with 2 different sets of DNA. In birds it seems to always split them down the middle, one side one bird the other another.
It happens in humans(people with 2 different colour eyes for example), but in humans it is not as noticeble or clear as it is in birds. Not so clearly displayed. In humans its very spotty, some may just have an off coloured tuft of hair, others may have patches of skin that doesn't match the tone of the rest, eyes different colour and sometimes you cannot tell visually at all. Sometimes the outside is one DNA profile while the internal workings are another.