Every two year old male I have bred has produced fertilized eggs. Some have not had eyes. Most, however, have had eyes. The lowest % of fertilized eggs using a two year old male comes from mating the two year old male with two year old hens. I don't believe that if you put one cock in a pen with hens that the girls will decide they don't want to breed with that male, regardless of size or appearance of the train. If they can see another male you could have a problem. Now if there are two cocks in a pen, the females may prefer the larger trained cock, I don't know. Even one year old birds recognize mating behavior from males. I now have four chicks from the yearling pen here at the farm. Those males don't have any train but they figured out what was going on. One of the chicks appears to be opal silver pied.I really hate to keep quoting Brad Legg and what he has told me, but here I go again, so prepare yourself. He told me that a two-year-old does not have to have train eyes to breed. That they are totally capable although the viability of the sperm is lower, couple that with their inexperience and they don't do as well in a breeding program, but still capable. What that makes me wonder is if they don't need eyes to be viable, why do people assume that mature males are not either?
My supposedly high percentage Spaulding Purple BS two-year-old pair were alone in their own pen and did not lay one fertile egg out of the dozen she layed. That was dissapointing.
As I understand it, hens choose the males based on the appearance of the train and number of eyes. Perhaps they are not interested in a cock who has lost his train, and therefore we assume that he is not viable.
Also, he pairs them up in the fall to assure that they are well aquainted and more likely to breed come breeding season. Many of his pens have six hens to a cock. This year I did not sell off all the extra IB hens I wanted to and had nine hens with one cock in my IB pen. I was concerned that I would have many clear eggs, but the hatch rate was just as good in that pen as in the pen where there were only three hens to one cock. It was not my intent to run that many hens in that pen, I would certainly have liked to have had only six although it turned out to be ok probably because the cock was mature enough to handle the situation.
. Meet ZeeBee (again my niece's name for her)