Do you now sombody with persian rumpless. I took them home. That race is cold Cobb 500. It's an commersial chicken. Also one chicken what is capt for egg roduction an Isa Brown Warren.
All birds have no tail an are compleet rumpless.
The Bolstaart birds were shown in gezoomd patrijs, gezoomd geelpatrijs, gezoomd silverpatrijs, patrijs, geelpatrijs and silverpatrijs. I have pictures of the geelpatrijs, as it is a variety we raise in Hollandse Kriel in the U.S., and in no other breeds, my favorite variety. I am still not sure I have answered your question, but I will keep trying. Do plan to attend the show at Wehl in November, if you can. The Drentse will be shown in large numbers and the breeders should be able to tell you the history of the birds and their breeding.