You can also see how the effect of photoperiodism relates to the rut,
If that is true why do bucks come into rut early-mid- Nov in the North yet the rut doesn't happen in the parts of the South until months later?
If photoperiodism was the factor when the rut occurs, why don't all bucks come into rut at approx the same time? The period of daylight doesn't vary from state to state.