These Border chicks are fourteen days old. This is the perfect time to reintroduce the male into the cage for maximum second round fertility because the chicks stay out of the way and do not inhibit mating.
I reintroduce the Border male in their cage today and the hen immediately squatted upon hearing the male's breeding song and the pair successfully mated! After an hour and a few more matings, he was removed from the cage. I will repeat this at least daily till she is laying.
But by the 18th day, chicks are leaving the nest and begging for food and just generally getting in the way and interfering with mating. Time for what I call a Time Out.
During a Time Out, the chicks are moved temporarily to another cage for an hour so that the adult birds can have more opportunity for mating. Once the male is removed, the chicks are returned to their brood mothers.
The five Border chicks in Time Out were from these Borders in a colony breeding of two hens with one male who was then moved on to other hens.
Critical Concept: The perfect time to reintroduce male to the rearing hen for maximum fertility on the second round is when the chicks are fourteen days old.