Now Poopybutt started crowing at about 2 months old, but Henry started crowing the week I went into the hospital which was the 27th of June. So that would make Henry almost 1 month old when he started. But he had Poopybutt to listen to and learn from. Henry's group was all born on the 30th of May. Poopybutt and his girls were born the 10th of March and he started in mid May.