I have seen jewelry that resembles earings being worn on dewlaps and in some of the videos in the "war breeds" sections. Can some enlighten me on this subject. How is the jewelry attached? Are they specifically made for pigeons, or earings for humans put on the birds? About how many USD (United States Dollars) are each worth? Obviously they are put on for beauty, but are they used for anything else specific, such as only hens? Any other relevant info.