Development in the egg and for a week or more after hatching is, as far as fat soluble vitamins and some other factors are concerned, reliant upon supplies from the yolk. Hence, deficiency signs in newly hatched chicks (and often within the next 7 - 10 days) usually reflect a breeder feed...
They are just cross breeds. No, they are not a recognized breed. Their Rhode Island Reds are merely Production Reds. Their other "breed," is Dominiques. I would say that Dena's Special are the result of the 2 breeds crossing.
Dena's Special
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